But with that said their first reason for their unbelief remains unjustified.
They may rightly feel hesitant of believing for the aforementioned evils, but they are ultimately unjustified in their unbelief regardless of. First, the existence of God, whether true or false cannot not automatically be judged false by the mistakes of others. Second, the existence of God is evident enough.
Atheists and Agnostics always want tangible proofs of His existence; but in His wisdom He rightly does not evidenced Himself to them. Not BY their terms. Many of the same often demands that He appears to them. What a monstrously audacious request!
Imagine a person of the lowest social order commanding a King to present himself before him and yield to his inquisition. How much more shameful it is for an the infinite and almighty God to stoop to the commands of finite, mortal sinners? Besides, it would only mean instant incineration for the latter, for no one can see God and live (Exodus 33:20-23, Isaiah 6:1-5, & Hebrews 12:9).
Now He did give evidence of Himself and He did so abundantly, but He made it so that only one who is truly seeking will find Him, being unencumbered by his/her heart and mind (Jeremiah 17:9 & Romans 8:6-8).
God made Himself known primarily through His own creation and that is evidence enough. The purpose being that the truly seeking will find Him by reason…, and not merely by sight. By sight s/he can see the marvels of creation, the beauty and utter complexity of it, and by reason s/he will inevitably conclude that all were miraculously made and ordered by one not human but divine. Even the Godhead would be clearly evident to him/her as things always seemed to come in threes: past, present, and future; land, sea, and air; root, stem, and leaf.
But they cannot see Him, even for a fleeting moment they wanted to; for their mind is bent on rebellion, driven on by their wicked heart (John 3:20-21). In the field of Psychology there is this theory called, “Cognitive Dissonance”; it means that the mind automatically filters anything that is inconsistent in their world. In this case they want the freedom to be the masters of their own life so profoundly they have become mentally blinded to His existence. They see a tree, but only a tree, as they cannot see the truth behind it. But this is not unique to them.
All of us are one way or another blinded by our minds and hearts. We are all born in sin and thus live our lives accordingly (Genesis 8:21 & Romans 5:12-16). Some of us do see the divine hand in creation but were we all driven to fall on our knees in total surrender to the divine by that alone? No. For us who have come to Christ, it took a measure of persuasion and God to have us come to faith and repentance (Romans 10:15 & John 6:44). And at the same time, how long did it took for us to realize our profound depravity, therefore our inability before the living and righteous God, to save ourselves (Romans 3:9-18, & 19-24)?
In that regard therefore, we’re not any better than the Atheists and Agnostics (Ephesians 2:2-3 & 8-9).