Things I learn in Christian Thought

So as Christians the Bible tells us we need to be sure of what we do not see ie God. So how do we know God exists? Well there are two kinds of "knows". The first is how you know that you are reading my blog right now. The other kind is how you know ur mom, dad, bff, or anyone ur super close to. It's a deeper. What if Paul is saying that we don't necessarily need proof to know God is there but rather we need to know him like we know our family members. It is a relationship after all right?