How do we get to know God? The same way we get to know anybody else. First, talk to them. Second, listen to them. And third, go places and do things together. Those are the things we need to do. But how do I know God is there?
There are many things we can’t see. We can’t see electricity or the wind. But we can see what it affects. So even though we cannot see God or hear His voice with our human ears we can still see the working of His power; and by learning how to talk and listen to Him we can come to know Him. It’s in knowing Him that we learn to trust Him.