1. The Definition of Omniscience
Omniscience means "all-knowing." God's knowledge is perfect, complete, and eternal. He does not learn, discover, or forget. He knows all things simultaneously in one simple, eternal act of knowing. He knows the actual (everything that has happened, is happening, and will happen) and the possible (everything that could happen under different circumstances). He knows the thoughts of every mind, the intentions of every heart, the words of every tongue, and the deeds of every hand. Nothing is outside the scope of His knowledge.
2. God Knows All Things
The apostle John writes, "For God is greater than our heart, and knows all things." This simple statement encompasses the totality of divine knowledge. The psalmist declares, "His understanding is infinite." There is no limit to what God knows. He does not need to be informed, corrected, or reminded. He knows the end from the beginning because He sees all of history as an eternal present. He knows the number of the stars and calls them each by name. He knows every sparrow that falls and every hair on every head.
3. God Knows the Hearts of All Men
Solomon prayed, "For You, even You only, know the hearts of all the sons of men." Jeremiah declares, "I, the Lord, search the heart, I test the mind." Jesus knew the thoughts of the Pharisees and did not need anyone to testify of man, for He knew what was in man. The psalmist acknowledges, "You understand my thought afar off." There is no secret motive, hidden sin, or unexpressed desire that God does not fully know. He sees through every pretense and knows every heart exactly as it is.
4. God Knows Every Word Before It Is Spoken
David writes, "For there is not a word on my tongue, but behold, O Lord, You know it altogether." Before a word is formed in the mouth, God knows it completely. He knows every conversation, every prayer, every curse, every lie, every truth spoken. This is not merely foreknowledge; it is perfect, simultaneous knowledge. The speaker does not inform God of anything new. God knew the word before the speaker thought it.
5. God Knows the End from the Beginning
The Lord declares, "I am God, and there is no other; I am God, and there is none like Me, declaring the end from the beginning, and from ancient times things that are not yet done." God does not predict the future by guessing or calculating probabilities. He knows the future because He has decreed it and sees it as present. He named Cyrus centuries before his birth. He prophesied the crucifixion in detail. He knows who will believe and who will reject Him. The future is not unknown to God; it is as clear as the past.
6. God's Knowledge Is Not Acquired but Inherent
God does not learn. He does not discover. He does not receive information from outside Himself. Paul writes, "For who has known the mind of the Lord? Or who has become His counselor?" No one teaches God. No one corrects God. His knowledge is not accumulated over time; it is inherent in His divine nature. He knows all things because He is the source of all truth. He does not need to study, observe, or calculate. He simply knows.
7. God's Knowledge of Future Free Choices
Some object that if God knows the future, human freedom is denied. But Scripture affirms both God's foreknowledge and human responsibility. Peter declared that Jesus was delivered by the "determined purpose and foreknowledge of God" yet crucified by "lawless hands." God's foreknowledge does not cause human choices; it simply knows what those free choices will be. The mystery remains, but both truths are taught in Scripture. God knows all future free choices, and yet men are responsible for their actions.
8. The Comfort of God's Omniscience for Believers
For the believer, God's omniscience is a comfort. He knows our needs before we ask. He knows our struggles and sympathizes with our weaknesses. He knows our tears and has them in His bottle. He knows our frame and remembers that we are dust. No trial takes Him by surprise. No hidden sin will ultimately condemn us, for we confess to one who already knows. The believer can pray with confidence, trusting that the all-knowing God understands perfectly and acts wisely.
9. The Warning of God's Omniscience for the Unbeliever
For the unbeliever, God's omniscience is a terror. Every secret sin is known. Every hypocritical prayer is heard. Every hidden motive is exposed. The writer of Hebrews declares, "And there is no creature hidden from His sight, but all things are naked and open to the eyes of Him to whom we must give account." Nothing can be hidden from God. The unbeliever may fool men, but he cannot fool God. On judgment day, every secret thing will be brought to light.
10. The Worship of the All-Knowing God
David concludes, "Such knowledge is too wonderful for me; it is high, I cannot attain it." The omniscience of God is beyond human comprehension. The believer does not fully understand how God knows all things, but he worships. He prays, "Search me, O God, and know my heart; try me, and know my anxieties; and see if there is any wicked way in me, and lead me in the way everlasting." The all-knowing God is worthy of trust, fear, and praise.
Conclusion
The omniscience of God means that He possesses perfect, complete, and eternal knowledge of all things. He knows the hearts of men, the words on every tongue, and the end from the beginning. His knowledge is not learned but inherent. For believers, this truth is a comfort; for unbelievers, a terror. Let every soul humble himself before the all-knowing God, confessing that He sees all, knows all, and judges all with perfect righteousness.