What does it mean that the Word of God is living and active (Hebrews 4:12)?

The apostle then sets before us the instrument which God employs to judge the unbelief and all the workings of the heart which tend, as we have seen, to lead the believer into departure from the position of faith, and to hide God from him by inducing him to satisfy his flesh and to seek for rest in the wilderness.

To the believer who is upright in heart this judgment is of great value, as that which enables him to discern all that has a tendency to hinder his progress or make him slacken his steps. It is the word of God, which — being the revelation of God, the expression of what He is, and of all that surrounds Him, and of what His will is in all the circumstances that surround us — judges everything in the heart which is not of Him. It is more penetrating than a two-edged sword. Living and energetic, it separates all that is most intimately linked together in our hearts and minds. Whenever nature — the "soul" and its feelings — mingles with that which is spiritual, it brings the edge of the sword of the living truth of God between the two, and judges the hidden movements of the heart respecting them. It discerns all the thoughts and intentions of the heart. But it has another character, coming from God (being, as it were, His eye upon the conscience), it brings us into His presence; and all that it forces us to discover, it sets in our conscience before the eye of God Himself. Nothing is hidden, all is naked and manifested to the eye of Him with whom we have to do.

God's word, which addresses itself to us, is living and operative; comes from the living God, and works in living power in the heart of him who receives it. The word is the living instrument which brings God's thoughts to His people, and maintains them in living touch with Himself and its penetrating and divisive qualities in a moral way are greater than those of the sharpest human weapon in material things, for it enters into the heart and divides what is natural from that wrought there by the Spirit of God. The word also enables us to distinguish between our movements and the springs that actuate those movements and gives us to discern the true character of all our thoughts and the intentions of the heart. How indispensable and invaluable all this is to the Christian; to be capable, as the word of God has its place within us, to test every inward spring, every feeling, every motive, every desire, and every action; so that the unsparing judgment of God might be brought upon all that proceeds from the flesh, and to delight in all produced by the word in the Spirit's power. When the word enters the heart it discovers every secret, and brings us consciously into the presence of Him who knows all about us. This is great gain for the Christian, for this knowledge leads him to order his course in the sense of being constantly under the all-seeing eye of God.

"Let us therefore use diligence to enter into that rest, that no one may fall after the same example of not hearkening to the Word" (N. Trans.). The matter is of vital consequence, and well worth applying ourselves in serious earnestness. A negative attitude is fatal, for it ignores the clearly spoken Word of God. If there were any indifferences to the glory of the revelation of God in the Person of Christ, the testing of tribulation or per­secution would expose it: that person would fall. The only protection for the soul is a positive, real faith in the blessed Son of God, an ear opened to receive the Word of God as living truth. Who can dare claim the knowledge of God if he refuses Scripture as the revela­tion of God? There is certainly none other, and it remains the one solid foundation for faith.

"For the Word of God is living and operative, and sharper than any two-edged sword, and penetrating to the division of soul and spirit, both of joints and marrow', and a discerner of the thoughts and intents of the heart" (N. Trans.). How this transcends all human writings. which become mere stagnant pools in contrast to the constantly flowing freshness of this river of the water of life. Its every part is full of fresh vitality, ready to meet every demand of faith upon it, for if we fail to find fresh blessing, wisdom, encouragement, from any part, this is our own failure, for the living truth is there. Moreover, it is pregnant with energy that begets active response and results where there is faith: it is operative.

More than this, however, it cuts: it is no respecter of persons. A two-edged sword cuts both ways. If one would use it, he must be prepared for its cutting in regard to his own conduct and doctrine just as to that of others. It pierces and divides, that is, penetrating beneath the surface of things, it distinguishes in finest precision between things that differ. Soul and spirit could never be distinguished by mere observation or human wisdom. Yet the Word of God clearly discerns between the two, attributing to the former all that expresses feeling, emo­tion, passion; and to the latter intellect, reasoning, understanding, conscience. These two entities in man are entirely above natural science, though natural science actually bears witness to the necessity of their existence. But joints and marrow are more naturally understandable, and the scientist knows the distinction, the one being external, the other the necessary internal ingredient by which the joints operate effectually. This is but one sym­bolic illustration then of the Word's character of dividing in any realm between outward form and inward opera­tion. How we need this for the guidance of our own souls!

But more: it discerns the very thoughts and intents of the heart. In these things we are all too likely to be self-deceived, and in order to maintain self-respect will seek to persuade ourselves that our motives are actually better than they are; or to hide our actual intentions or desires under a plausible cover of avowing that we want the leading of the Lord! But let us honestly read the Word of God, and it will expose to us these secret work­ings, and make manifest the counsels of the heart. This is strikingly seen in Jeremiah 42, where Johanan and the remnant of Israel required of Jeremiah as to the will of God, declaring their absolute intention of obeying God's Word. But the Word given them also discerned the actual dissembling of their hearts, (vs. 20, 21), and Jeremiah told them they would not obey the Word of God, but do their own will. Then their brazen actions proved the Word of the Lord to be right, but they excused themselves by denying it to be the Word of God! How little does man suspect the actual deceit of his own heart! May God give us to judge ourselves by His Word, the only trustworthy standard. It can be a grievous snare to us to assume that our preferences are consistent with the Word of God, then when the Word is given us to the contrary, to object that it must be a wrong translation or wrong interpretation, and thus dismiss it without honest inquiry.

(Vv. 12, 13). We are reminded that the Word of God is not a dead letter; it lives and acts by penetrating the heart of man. The result for the one whose conscience and heart come under its influence is twofold: firstly, it reveals the thoughts and intents of the heart; secondly, it brings the soul into the presence of God with whom we have to do.

The Word exposes to us the hidden lusts of the “soul” and the reasonings and unbelief of the “spirit”, so revealing to us the true character of the flesh by searching the secret thoughts and intents of the heart. Here it is not a question of outward sins, but rather the hidden motives and spring of evil. The Word discovers to us the hidden depths of the heart, making manifest how much of “self” is the secret motive of the life. Moreover, being the Word of God, it brings us into the presence of God. It is God speaking to me, laying bare my heart in His presence, there to confess all that the Word detects. How was it that Israel fell in the wilderness? Was it not because “the word preached did not profit them”? Had they by faith let that Word have its place in their hearts, it would have led them to discover and judge the secret roots of unbelief that hindered them from entering into rest.

The Word of God. — Meanwhile, in the conflict in which we are called to engage, and in the journey of life here, God has provided by the action of His Word on His people to teach them what they need, and to show them whence come their thoughts and their deeds. Of this we are now to learn. And first what the Word is, and then what the Word does. It is quick, or living. As God's Word, it has His character, and is so called (Acts 7:38; 1 Peter 1:23) — a character peculiar to itself, being the Word of the living God. Next, it is powerful, or rather, active. It is also sharp, sharper than any two-edged sword. Of its dissecting power we next read. It can pierce, so as to divide between soul and spirit, joints and marrow. Further, it is a discerner of the thoughts and intents of the heart. The whole man, and every part of the man, can be laid bare by it. Body, soul, and spirit, and the workings of his heart, all can be detected by it. Terrible, how terrible, would this be, if grace were not known! But to help those who are partakers of the grace of salvation the Word can thus act.

In this part of the Epistle from Heb. 3:1, of which these verses are the close, the saints are exhorted to consider the Lord Jesus as the Apostle of our confession, that is as the sent One of God, through whom the Word of God upon which our confession is founded has been communicated to us. He is also our High Priest to sustain us according to that confession, though in weakness here, by His succour and sympathy. This second great subject of Priesthood is taken up from Heb. 4:14 and continued through several chapters. But what we have now to do with is the Word of God, by which clearly the Scriptures are indicated. For just as the Lord Jesus is the Word incarnate (John 1, "In the beginning was the Word"), as the mind of God and the expression of His mind, so the Scriptures are also the Word of God. Both reveal and communicate the knowledge of God who otherwise is invisible and inaccessible to any creature. The characters attributed to it are deeply to be observed, for they make it the most powerful help that God could give to the really upright in soul to pursue the path of God across the world that is opposed to us in every principle of it. It is "Living," even as the Lord Jesus could say "The words that I speak unto you they are spirit and they are life." It is the incorruptible seed by which we are born again, "The Word of God which liveth and abideth for ever." (1 Peter 1:23.) It is this that gives it its perennial freshness, the best-known passage yielding fresh thoughts to those who look into it; also its unfathomable depth. Powerful, too (or "operative" more literally) it is sharper than any two-edged sword, Piercing to divide asunder soul and spirit, intimately connected as they are in our being, enabling us to distinguish between what is natural (that is the soul), and what is spiritual (i.e. the spirit). Thus, instead of living to ourselves and seeking ease where we are but pilgrims and strangers, we are taught to cultivate what is of the Spirit and detect what would impede our pressing on to the rest of God. Then it is a discerner of the thoughts and intentions of the heart, that we may not deceive ourselves, and leading us to take cognizance of things in their roots in self-judgment, that we should only have known otherwise by their bitter fruit. And, lastly — the connection between the two verses being very remarkable — we are brought by His Word into the presence of Him in whose sight every creature is manifest, set consciously before Him as to the hidden springs of things within us, naked and laid bare before the all-searching eyes of Him with whom we have to do. It is serious work, but invaluable for those who know His grace, enabling us to pursue our path brightly for Him with nothing allowed that the heart condemns, nothing to hinder our confidence toward God.

The Word of God and its divine living power is here introduced by the Holy Spirit. It is the method of God, to use His Word, to bring to light and judge the unbelief and workings of the heart. It judges everything in the heart which is not of Him. Its use, its constant use, is the supreme necessity of those who believe and are on the way to the rest of God, for it is His divine Word which brings us into God's presence. It is a searching Word and under its power the conscience becomes aroused and the blessed and needed work of self-judgment begins. Life, power and omniscience, three great attributes of God, are here given to His Word. The Word also gives power and spiritual energy.

Then there is "the sword of the Spirit, which is the word of God." He Himself gives it to us. If you look at that sword, there is one practical characteristic of it; it has two sharp edges, but it has no handle. It is not a thing put into your foolish, inexperienced hand to go and slash with; it is sharp, keen, powerful, and two-edged; it comes home to me. Thus it acts rightly on another through me, because it has first affected the one who uses it. It searches the heart, and does its work in the soldier of Christ before it does its work elsewhere. There is the edge that goes in, "piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart." Not merely it discovers whether the action done is done aright or not, but it goes in and discovers the thoughts and intents of the heart. Do you know this use of the word of God? Do you know the word of God in that character? That is God's way of making His word effectual; all the secret motives, the little pettiness, the little prides, the little self-seekings, He lays bare. There is nothing more terrible than this sword of the Spirit; it always does its work within your own soul first, and then the other edge of the sword begins to do its work for God and for Christ.

But God does not leave His people to get on as best they can. He has provided His word, living, and powerful, which can do what the keenest blade cannot, pierce even to the division of soul and spirit, of joints and marrow, and is a discerner of the thoughts and intents of the heart. (12, 13.) Thus by the Word the believer may detect the springs of his actions, and see all in the light of the divine presence; "for all things are naked and opened to the eyes of Him with whom we have to do." But more is wanted than the searching and dissecting action of the Word. We need grace for the wilderness walk. Now this the High Priest procures, so the writer next dwells (4:14 - 8:13) on the present service of the High Priest, before dwelling on the sacrifice and offering up of the Lord Jesus Christ.

271 There are two passages to which I would draw the reader's attention, in connection with - the first part of the armour. Hebrews 4, "The word of God is quick [living] and powerful, and sharper than any two-edged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and a discerner of the thoughts and intents of the heart. Neither is there any creature that is not manifest in his sight: but all things are naked and opened to the eyes of him with whom we have to do." Here it is, evidently, the searching character of the word; and "thy word is truth." It is divine, living, and efficacious. Nothing that is creature escapes its penetrating judgment. The declaration of scripture does not here go beyond this. But if I have an earnest desire that all things should be "of God" in me, according to the new creature (2 Cor. 5), and have learnt that as to what is of the mere creature, in so far as it has a will, all the imaginations of the thoughts of his heart are only evil, and that continually. If my heart is divinely right I shall be most thankful for this detection of all that hinders my spiritual life, and comes between my soul and God, mars alike my communion and my walk, and I shall bring the hindering inclination into the all-judging and delivering presence of God.