Westminster Q2: How doth it appear that there is a God?

(Rom 1:19-20) because that which is known about God is evident within them; for God made it evident to them. For since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through what has been made, so that they are without excuse.

(Psa 19:1-3) For the choir director. A Psalm of David. The heavens are telling of the glory of God; And their expanse is declaring the work of His hands. Day to day pours forth speech, And night to night reveals knowledge. There is no speech, nor are there words; Their voice is not heard.

(Act 17:28) for in Him we live and move and exist, as even some of your own poets have said, 'For we also are His children.'
(1Co 2:9-10) but just as it is written, "THINGS WHICH EYE HAS NOT SEEN AND EAR HAS NOT HEARD, AND which HAVE NOT ENTERED THE HEART OF MAN, ALL THAT GOD HAS PREPARED FOR THOSE WHO LOVE HIM." For to us God revealed them through the Spirit; for the Spirit searches all things, even the depths of God.

(2Ti 3:15-17) and that from childhood you have known the sacred writings which are able to give you the wisdom that leads to salvation through faith which is in Christ Jesus. All Scripture is inspired by God and profitable for teaching, for reproof, for correction, for training in righteousness; so that the man of God may be adequate, equipped for every good work.

(Isa 59:21) "As for Me, this is My covenant with them," says the LORD: "My Spirit which is upon you, and My words which I have put in your mouth shall not depart from your mouth, nor from the mouth of your offspring, nor from the mouth of your offspring's offspring," says the LORD, "from now and forever."