People can be irreligious, delusional or belonging to lovers of agnosticism, ignosticism, ietsism, scepticism, pantheism, atheism, strong or positive atheism, implicit atheism, and apatheism. After the rebellion of man God saw the world turning against Him but kept hoping in a good relationship with His creatures.
In mankind's history there can be found natural theology which is generally characterized as the attempt to establish religious truths by rational argument and without reliance upon alleged revelations. Newt to it we may find lots of name-Christians trying to proof God exist but for them Jesus being God, others can see that their idea of God being Eternal, Immaterial, Transcending space, The Creator and Designer of the universe, Omnipotent, Omniscient, The unique greatest possible Being, does not fit at all their Jesus-god. Many people putting 2 and 2 together decide then wrongly because those qualities not fitting Jesus, he is not being able to be God but then there than also not being a Supreme God.
The Bible show us The Being Who makes us able to be a being. The collection of 66 books focus on That Most High Being without Whom no being or existence is possible. The Words of God are there to mould or form each creature of God. By allowing that Word of God to form us we can become reconstituted or 'made anew' by the Former God.
There are no proven external defects in the witnesses all those Biblical authors and contradictory to the adversaries their sayings and writings, no internal defects in their testimony can be found either.
Only by a Most High Supreme Being that existed for ever causing everything to come into being, the being only can be a reality and as such to be a truth when that Eternal Causer, Provider and Most High Supreme Being is a realistic existing Thing or Personality. We must come to believe in Him and His Words calling for things to come in order from the chaos and His breath to be the life giving element. Even when there may have taken an evolution over a long period of time, looking at the complexity of all things we should be in awe and have more faith in a Master-hand behind everything, coming to see that without this Master Creator or Godly Designer has provided for life and consciousness having made beings to come to be able to think, handle and talk like human beings do.