God's existence is presuppoisitional (Gen 1:1) and if the Bible were not true we could not prove anything. However, some suppress this truth by the means of unrighteousness (Rom 1:17-20). If I where to ask the reader to look at a building, how could you know there was a builder? It's true you can't see him, touch him or smell him. However, it seems obvious that the building is proof there is a builder. If there is creation there must be a creator. The cosmological argument states Whatever begins to exist has a cause
The universe began to exist,
therefore it has a cause.
This cause must be omnipotent, transcendant, unchanging, and eternal or else itself would need a cause. Moreover, the cause would have to be personal in order to create something personal (humans). The eternal, transcending, omnipotent, unchanging, personal, cause is described in the Bible as God. Some of you might think I am contradicting myself, remember I stated that whatever begins to exist has a cause, God never had a cause because he is by definition eternal, he never begins. Suppose you wanted to borrow a book from me, but I did not have it. So I borrowed it from my mom, but she did not have it, so she borrowed it from my dad, but he did not have it. So this goes on infinitly. If no one has the book you will never get it. This is the same as existence if some one does not have it without having to borrow it from someone else you will never get it. Yet we are here, therefore there must be an infinite God who has no begining or end (eternal). Only the Christian worldview (which is derived from the Bible) can account for causality not the Atheist worldview.
Secular philosophers like David Hume, and theistic philosophers like Immanuel Kant have done the Christian a great service by pointing out what is commonly called in philosophy the problem of induction. Hume pointed out that human beings have no justification for projecting past information including experiences or events into the future. For if we live in a random universe were chance is considered god and can produce anything including matter out of nothing (abiogenesis) as atheists believe, we have no reason to believe that the universe is uniform. Hume stated we do induction- or take past information like experiences and project them into the future--because it is a habit. Immanuel Kant took what Hume believed and revised it, stating we do inductive inferences because we just cognitively think that way psychologically. Hume and Kant both did not give a justification for inductive inference nor could they account for it. Both of their conclusions show apart from the Bible knowledge is impossible because there is no foundation for the belief in regularity in the universe.
Presently, still the problem of induction cannot be justified by an atheistic or agnostic worldview. For example, if I went down a skateboard ramp on a skateboard and fell and hit my knee; I would have no justification for believing that if in the future I repeated my actions the same outcome or experiences would happen because according to the atheistic worldview we live in a random chance universe where anything is possible. Therefore, if the atheistic worldview were true (Which it is not) there is no regularity in the universe, therefore knowledge and science is impossible. However, as the atheist should rightly point out we do gain knowledge through induction and science that is because the Christian worldview is true.
The Bible states as I have already pointed out, we all do know in our heart of hearts the Triune God of the Bible, but we have suppressed the truth in unrighteousness. We know we have broken God's laws the Ten Commandments, and our conscience bears witness. Since we have broken an infinite law (God's laws) we deserve an infinite punishment in hell. We are all liars, theives, adulters at heart, and blasphamers in God's sight but God commended his love toward us (his people) that while we were still sinners Christ Died for us. Jesus suffered and died on a latin cross taking the punishment upon himself for all who repent and trust in him. On the third day he rose from the grave, and defeated death. It's as if we broke God's Laws but Jesus paid the fine of who ever will believe (trust) in him. God now commands us to repent (turn from our sins) and trust in Jesus alone for salvation. Not just believe in him but actually trust in him.