What is lust in the Bible?

"Desire" and "lust" are really the same word, as may be seen from many passages. For example, the word translated "lust" in the above scripture is the same as that in Phil. 1:23 (and a number of other places), where it could only be rendered "desire." It is the thing longed for that characterises the nature of the feeling cherished. If the object of the craving is good, according to God, then it is a holy desire. Thus the Lord Himself uses the word in question when He says to His disciples, "With desire I have desired to eat this passover with you before I suffer." (Luke 22:15.) When the object, on the other hand, is evil, then the desire for it is "lust." Hence the apostle employs the word when he speaks of the "lusts of our flesh." (Ephesians 2:3.) There is consequently an important distinction to be noted. "Lust," as James teaches, has its origin in ourselves (chapter 1:14), but holy "desire" is the fruit of the action of the Spirit of God in the believer.

Let one instance suffice out of the seven occasions in that discourse when our Lord said, “I say to you.” “Ye have heard that it was said of them of old time, Thou shalt not commit adultery: but I say to you, That whosoever looks on a woman to lust after her has committed adultery with her already in his heart” (Matt. 5:27-28). Where is there the setting aside of the law? Nay, He upheld it. The law was content to forbid the actual act, the Lord went further, and not only forbad the outward act, but the inward desire.

The Lord is not speaking here about accidental, unintentional looks which can hardly be avoided, but about the conscious covetous looking: "Whosoever looketh on a woman to lust after her..." The intentional look is therefore preceded by the sinful thought in the heart.

If the love of the Father possesses us, we shall see the world in its true light. We shall possess a spiritual faculty which acts after the fashion of the much prized X-rays. We shall get down beneath the surface of things to the skeleton framework on which all is built. That skeleton is revealed to us in verse 16 as, "The lust of the flesh, and the lust of the eyes, and the pride of life;" all of which spring not from the Father but are wholly of the world.

The lust of the flesh is the desire of having — the desire to possess oneself of those things that minister to the flesh. The lust of the eyes is the desire of seeing, whether with the eyes of the head or with those of the mind, all the things that minister to one's pleasures. It would cover man's restless intellectual cravings as well as his continual hunt for spectacular pleasures. The pride of life is the desire of being — the yearning to be somebody, or something that ministers to pride of heart. This is the most deep-seated evil of the three, and often the least-suspected.

It is an immense thing to get a due sense in our souls of the difference in this respect between Christ and every other man. Here is One who never had a motive in His heart save the will of God — One whose meat and drink were to do that will. And the presentation of anything else to Him brought the most intense suffering, the deepest pain and anguish. Why? Because He was, as Man, absolutely perfect. Temptation to other men is pleasure. There is in us a kindredness to it; there is that in us which responds readily and gladly, which accepts, entertains — yea, even welcomes, the allurements of the enemy. Have you not found this out, my beloved brethren? Is it possible that you have not as yet discovered that there is an open door, the flesh in us, for all comers? Are there no pleasures in sin? And that too even though they be but for a season? Mark what the Spirit of God says as to lust. What is lust? It is a principle of the flesh that desires to have for itself; it matters not what it is. It is the desire to possess independent of God, and that independent will in the creature is the root and essence of sin.

For that reason the Lord now says, "But I say unto you, That whosoever looketh on a woman to lust after her, hath committed adultery with her already in his heart" (v. 28). Because of the teaching of the scribes and Pharisees, the Jews thought the mere outward observance of the law was the way to be justified before God. Here, the Lord points to the human heart and shows that adultery has its source there. This is not a "spiritualisation of the law," as is sometimes said. He reveals for the first time something which had to become clear by experience to every honest Israelite, namely, that everyone who endeavoured to keep the commandment, "Thou shalt not commit adultery," had within themselves those very lusts which led to the actions forbidden by God, and had not the strength to overcome them. The lusts were even provoked by the commandment: "... for I had not known lust, except the law had said, Thou shalt not covet" (Rom. 7: 7-11).

292 All this flows from the damnable doctrine that lust is not sin. What is it? Is it holiness or righteousness? Where does it come from? It is the fruit of the sinful nature; "sin taking occasion by the commandment wrought in me all manner of lust." Those who rest on fruits in James — and I do not call it a strawy epistle — find no sin till it has conceived and brought forth. Those who go to the root with the word of God know that there is sin in the flesh. If Satan were to suggest to eat a handful of mud and dirt, would any one be inclined to do it? If he succeeds in touching us, it is because there is a desire in the sinful nature to which he adapts himself. If we are full of Christ, he will not succeed; but if the suggestion is awakened in our hearts, sin is awakened into the activity of desire, though we may rightly resist it; and if we look to Christ, we shall be victorious. Was any such suggestion awakened in the blessed One? All this loose insinuation as to Christ, to excuse and cover sin in ourselves, is very bad indeed. Was anything within in Christ which He had to resist? It must not be covered over with loose words, as "temptation or infirmity," which words have professedly in scripture a double meaning. (See James 1.)

The word ἐπιθυμέω signifies 'to desire earnestly,' and is often translated 'desire,' without the thought of the desire being an evil one, as in Matt. 13:17; 1 Tim. 3:1; 1 Peter 1:12, etc. The English word 'lust' was anciently not always used in a bad sense, as it now is: see Deut. 12:15; Gal. 5:17.

As violence then was judged and excluded in any shape for the disciples, so was impurity. The avoidance of the extreme act might satisfy a Pharisee or Scribe; but the Lord could not dispense with anything short of truth in the inward parts. To look at a woman lustfully was to commit adultery with her already in his heart; and it is not the outside only that God regards but the heart above all. It is only a new nature that delights in holiness; and he who has it by grace answers to the will of God his Father; and abhors himself if he slip even into a wrong look, as unworthy of his calling and hateful to Him who loves him.

But there is another thing besides violence: there is the corrupt element in the heart of man — the heart lusting for that which it has not. This is taken up in the next word of our Lord: "Ye have heard that it was said by them of old time, Thou shalt not commit adultery: but I say unto you, that whosoever looketh on a woman to lust after her, hath committed adultery with her already in his heart. And if thy right eye offend thee, pluck it out and cast it from thee … And if thy right hand offend thee, cut it off, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell" (vers. 27-30). That is, whatever in our walk, or in our ways, or in our service, whatever it might be that exposes a soul to the danger of yielding to these unholy feelings, should never be spared, but departed from at any cost. There must be the excision of everything that is hurtful to the soul; the members of the body, such as the eye desiring and the hand which would take, being used as showing the various ways in which the heart might be entangled. The cutting off of these members sets forth a heart thoroughly exercised in self-judgment; not prompted to excuse itself by saying that it had not actually committed the sin, but whatever exposed to it must be given up.