Does God know the future?
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Does God Know the Future?
Yes — the Bible's answer is an unqualified and emphatic yes. God's foreknowledge is not a peripheral theological footnote but one of His defining attributes, woven through both the Old and New Testaments and grounded in the very nature of who He is.
Isaiah 46: The Signature of God
The most direct biblical statement comes from Isaiah 46. William Kelly, in his commentary on the passage, quotes it in full and draws out its weight:
William Kelly"Remember the former things of old: for I [am] God, and there is none else; I [am] God, and there is none like me, declaring the end from the beginning, and from ancient times [the things] that are not done, saying, My counsel shall stand, and I will do all my pleasure, calling a bird of prey from the east, the man that executes my counsel from a far country. Yea, I have spoken, I will also bring it to pass; I have purposed [it], I will also do it." (Isa. 46:9–11)
Kelly then comments on the naming of Cyrus (the "bird of prey from the east"), predicted by name over a century before he was born:
"Cyrus is here again cited as a striking proof of the reality of God's dealings with His people, and this both in foreknowledge, in declared purpose, and in providential ways."
The parallel chapter, Isaiah 48, makes God's own reasoning explicit. Kelly quotes it:
"I have declared the former things from of old; yea, they went forth out of my mouth, and I showed them: suddenly I wrought, and they came to pass. Because I knew that thou art obstinate... therefore I have declared them to thee from of old, before they came to pass I showed thee, lest thou shouldest say, Mine idol has done them."
Fulfilled prophecy is God's own chosen argument for His deity: He alone can declare the future because He alone is God, and He proves it by declaring in advance what no creature could know.
Omniscience as a Divine Attribute
A.J. Pollock states the attribute plainly as part of what it means to be God at all:
A.J. Pollock"The greatest word that can pass human lips is GOD—GOD from all eternity to all eternity, uncreated, self-sustained, omnipresent, omniscient, omnipotent, THE MIGHTY CREATOR and SUSTAINER, the one in whom we live, and move, and have our being (Acts 17:28)."
Omniscience — knowing all things, without exception, including all that is yet to come — is not one attribute among many but belongs to what it means to be God.
Acts 15:18 — "Known unto God from the Beginning"
H.H. Snell, writing on the remarkable unity of Scripture from Genesis to Revelation, anchors his whole case in a single apostolic statement:
H.H. Snell"In the Bible it is written, 'Known unto God are all his works, from the beginning of the world.' (Acts 15:18.)"
What appears to human observers as surprise — the calling of the Gentiles, the rise and fall of empires — was in God's mind before time began. The unity of Scripture from first to last is, for Snell, itself a testimony to this total foreknowledge.
Romans 8:29 — Foreknowledge of Persons
The New Testament brings God's foreknowledge into the most intimate territory — the salvation of souls. William Kelly, commenting on Romans 8:29 ("whom he foreknew, he also did predestinate"), makes a careful and important distinction:
William Kelly"It is important to observe that the apostle does not speak of a passive or naked foreknowledge (ver. 29) as if God only saw beforehand what some would be, and do, or believe. His foreknowledge is of persons, not of their state or conduct; it is not what, but 'whom' He foreknew."
On the great chain of verses — foreknew → predestined → called → justified → glorified — Kelly observes that the whole sequence is stated in the past tense even though glorification is yet future, and explains why:
ROM_PT2"All is looked at from God's side and purpose, not as if the call, justification, and glorification were already accomplished facts, but because the Spirit is emphatically asserting the whole from first to last, as assured in His eyes and by His word who does these things, known from eternity in His own everlasting now."
H.H. Smith draws out the same implication from the same passage:
H.H. Smith"Calling presumes God's foreknowledge. None can deny such foreknowledge to God; but if He foreknows it is equally easy for God to predestinate our future... God can call that which is not as if it were."
Synthesis
God's knowledge of the future is not a matter of divine guesswork, or even of "looking ahead" as one might look down a road. Kelly's phrase captures the deeper truth: "His own everlasting now." God does not experience past, present, and future sequentially as we do. The chain from foreknowledge to glorification in Romans 8 is not a prediction but a declaration from One who stands outside time itself, for whom all things are eternally present.
And this is precisely the distinction Isaiah presses home. What separates the living God from every idol is this: idols are carried on the shoulders of men and cannot answer when cried to; God carries His people from birth to old age and speaks the end from the beginning. His counsel stands; He does all His pleasure. That is not merely knowledge of the future — it is sovereignty over it.