21 Yes, they knew God, but they wouldn’t worship him as God or even give him thanks. And they began to think up foolish ideas of what God was like. As a result, their minds became dark and confused. — Romans 1:21 NLT
The Bible tells us in several places that only a fool says there is no God. If a person truly believes there is no God, then his mind will naturally be filled with all kinds of foolish arguments against the existence of God. Even the demons believe and know that God exists (James 2:19 NLT). They are not deceived about His existence, but it is their job to deceive others and they do that job well. We, as humans, cannot imagine the totality of what the Triune God is like. satan doesn’t have to imagine, he has been in heaven and in the presence of God. He is the father of lies and liars and as such, he has no qualms about deceiving people. He tells us little lies and half-truths about God and if we choose to believe those little lies, he has a foot in the door to lead us into total deception and darkness. His game is half-truths and compromise. Once he has gotten us to compromise our beliefs, he uses that guilt to take us farther and farther into his world of darkness. If we continue on the path with him, we will get to the point that we no longer acknowledge that Light exists and our minds will be forever darkened and confused. The truth never changes but our perception of truth can change. The truth is very simple. The Triune God was, He is and He always will be I AM. God is love and He sent His Son into the world to redeem the fallen world because He is love. The “why did He choose to do it that way?” part is not so simple.