Sometimes, as we say, 'we cannot see for looking'.
Or 'we can't see the wood for the trees'.
People can read the bible all their lives and never see that the very existence and nature of the bible implies the existence of God and that He meets with people.
There are so many encounters with God described in the bible over a long period by many different people, that it would be impossible for this to happen if God was not real and and if He did not meet with real people.
The writers of scripture write in depth about God because they know the God they are describing. They have met Him. If they had not they would not have had anything to write.
Let's home in on Moses' encounter with God at the burning bush and see God in action speaking to Moses and to us.