Genuine faith in God is perfectly grounded in facts. The realities which form this foundation arise from two sources: One is from all that which God has produced while the other is from all those things he has made known to us.
Reasoning from the tried and true principles of cause and causatum, we find within the world of nature all of the proof we need of a Creator. So much so that many neurotypical recognize that if exceptional intellect is required to merely duplicate the breathtakingly daedal designs and systems present in nature (
Biomimetics) then much more the original being replicated.
In this way, Creation itself is probative of our Creator's necessary existence.
As Romans 1:20 explicates: “For his invisible qualities are clearly seen from the world’s creation onward because they are perceived by the things made.” So indisputable is this proof for a wise Creator that the Scriptures simply point out: “The senseless one has said in his heart: ‘There is no Jehovah.’”— Psalms 14:1.
But there is certainly far more that furnishes us with an excellent foundation for our faith. The perfect truth we require for such a foundation exists within the Holy Bible, his recorded Word for us all. Its internal harmony, the well-documented success of its detailed and accurate prophecies, along with the corroboration, by historians, archaeologists as well as other researchers and scholars, of the details it holds, certify it beyond any doubt to be of divine origin and thus unquestionably true.
Accordingly, everything that God wishes us to accept beyond what he has shown us via the natural world is found in his Word. Inside it, he has provided you with a strong framework for which to reason on and develop a solid confidence that realities beyond your reach or still to be brought to fruition, are certain and true.