Imposing natural proof tests on supernatural claims is an unreasonable measure and totally inadequate. But where supernatural claims are made which have natural implications, such as “an invisible God created all that we see” (Romans 1:20), proof then takes on the garb of supporting evidence when looking at the natural evidence to support this supernatural claim.
This evidence, or proofs, for the existence of God invites atheists to consider it, especially for those who claim that there is none. At the very least it should be reasonably concluded that atheism, the absolute claim that there is no God, after considering all possible knowledge, is a highly irrational position. Accountability enters the picture now, if there is a God who created me, am I accountable to Him? That is a whole different thought to be considered.
Since there is sufficient evidence to show that the universe began and therefore must have had a beginning, we must also include the dimensions of time and space as part of that beginning. Therefore the “Beginning Cause” must have been outside of time and space. This is one of the central claims of the Bible about God: He is eternal and dwells above the heavens (Heb. 7:26), that is, God is outside time and space. At this point, we could apply these deductions using the scientific method to dismiss the claims of certain religions which present their “God” as being a part of time and space, pantheism. This includes Buddhism and Hinduism.
Within time and space there is moral, evil, corruption and decay. Since the Creator is outside of this He must be holy, immutable and impeccable. This then excludes the concepts of “God” put forward by Islam and Mormonism. But it fits perfectly with the concept of God as portrayed in the Christian Bible.
Perhaps the simplest test for discovering the identity of the Creator-God is to employ the scientific method to Psalm 34:8 and Matthew 7:7.