Since the first generation outside of the Garden of Eden, there have always been some of the most intelligent people who have denied the existence of a "God". One reason for that is, that no human has ever looked upon the person of Jehovah God. Jesus said, "No man hath seen God at any time; the only begotten Son, which is in the bosom of the Father, he hath declared him." John 1:18.
The few times that God has manifested Himself to anyone, by speaking audibly to them, were extremely exceptional. It has never been God's intention to, in effect, scare unbelievers into believing in Him by making a physical appearance or "command performance". Jesus Christ was the exception to God appearing to human eyes, but even He did not come into men's presence in His deified glory, or in a threatening or intimidating manner. You see, God wants us to believe in Him by faith ... as a personal choice based on the obvious truth that He "IS". "But without faith it is impossible to please him: for he that cometh to God must believe that he is and that he is a rewarder of them that diligently seek him." Heb.11:6.
Anybody would believe in a "God" who appeared in huge form in the sky and spoke like thunder, ""I am God.... but that would not be faith, it would be physical, fleshly vision and hearing. "But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him." Heb.11:6. Having to "see" the God of the Universe, with fleshly eyes, before you will believe, is sin. "...Whatsoever is not of faith is sin." Rom. 14:23. If we saw God in His infinitely, glorious brilliance, it would kill us. But how can one believe in something or someone they can't see with their eyes or hear with their ears or feel with their hands? That is the reason God Gave us His Holy word in the Bible. He foretold the coming of His Son, Jesus, in human form, an extension of God, Himself, in a body that could be seen and heard and suffer and die on the cross for our sins. "Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Shew us the Father?" John 14:9. Jesus declared plainly, "I and my Father are one." John 10:30.
Any true Christian will tell you that it was God's word, the Holy Bible, that convinced them of God, beyond any doubt, and beyond the observable, visible universe, nature and the millions of created miracles of God's infinite, genius and power. God's word is the confirmation of those created miracles. "For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse." Rom.1:20. If we had nothing but creation, itself, as a witness to the reality of a Creator God, that alone would be enough to convince a reasonable person to believe in Him, but it wouldn't cleanse us of our sins. Only Jesus coming to die on Calvary's Hill could do that... through faith in Him.
The primary reason many, otherwise intelligent people, say they do not believe in a "God", is that it isn't logical to them, it can't be proven to their satisfaction, and besides, a good God wouldn't allow cruelty, injustice, war, disease .... and so on. The problem with that is that this tiny finite, (minuscule at any distance), brain of man is guessing at God's infinite purpose and plan for humanity. Some deny Him ... knowing that if they ever truly believed on Him they would have to repent of the deep-rooted sins they don't want to give up or have taken from them. Their lust is greater than God ... to them.
If you don't believe God's word, the Bible, you have no other means of having the remotest idea of God's mind, and purpose of His creation and His will for us. You have no solid ground to stand on, no final authority if you do not have God's clear word on the subject. Evolution is more guess work and is simply the only alternative excuse unbelievers could dream up that they could twist into a pretzel appearance of something "scientific", so that they could appear as one of the intelligentsia. But error, with eternal consequences, is not intelligent. "O Timothy, keep that which is committed to thy trust, avoiding profane and vain babblings, and oppositions of science falsely so called." 1 Tim. 6:20.
Like it or not, the theory of evolution was devised and is an alternative religious faith for atheists who prefer any cause of creation other than a Creator ... God.
