“For since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and Godhead, so that they are without excuse…” (Romans 1:20).
The world was created by the Word of God (Gen. 1:3; John 1:3; Col. 1:16; Heb. 1:2), and thereby reflects the mind and character of God (Rom. 1:20). Man was created as the image of God (Gen. 1:16-27) and therefore cannot escape the face of God — “For of Him and through Him and to Him are all things, to whom be glory forever” (Rom. 11:36). Therefore, all the facts of this universe, every human being, all the creepy crawlies, all the birds of the air, all the beasts of the field, all the fish of the sea, all the trees of the forest, all the flowers of the meadow, all the grains of sand on the seashore, all the stars in the heavens, all the tiny molecules in the atmosphere, every last thing that God created declares the invisible attributes of the true and living God!! (Romans 1:20-21).
There is, therefore, no environment, no dark little corner, no small hiding place in this world where man can flee to escape the revelation of God (Psalm 139:8; Heb. 4:13). “The heavens declare the glory of God; and the firmament shows His handiwork. Day unto day utters speech, and night unto night reveals knowledge. There is no speech nor language where their voice is not heard. Their line has gone out through all the earth, and their words to the end of the world…” (Psalm 19:1-4). God’s natural revelation goes out to the ends of the earth and all people in every tribe, tongue, nation, and language of this world see His glory (Psalm 97:6).
Therefore, even when living in open, idolatrous, rebellion against the true and living God, all men are in the condition of knowing the true and living God and not merely “a god” (Romans 1:21), albeit in judgment as covenant breakers. Therefore, the Apostle Paul says that all men are without excuse for their rebellion (Rom. 1:20), and even their conscience accuses them of their rebellion against the true and living God (Rom. 2:14-16). As the Apostle John wrote, Jesus is “the true Light which gives light to every man coming into the world” (John 1:9).
Therefore, don’t believe the “agnostic” when he says, “I don’t know if God exists.” The God who “upholds all things by the Word of His power” (Heb. 1:3), and “who gives life to all things” (1 Tim. 6:13) “…did not leave Himself without witness, in that He did good, gave us rain from heaven and fruitful seasons, filling our hearts with food and gladness” (Acts 17:14). When people say, “I don’t know if God exists,” they are simply suppressing information they already know to be true (Rom. 1:18). Therefore, believe God’s Word and not fallen, unregenerate, rebellious men who are liars and more vain than vanity itself. For Jesus said, “Sanctify them by Your truth. Your Word is truth” (John 17:17).