How do we know God exists? Is the Old Testament binding?

Some say there's no evidence for God, we can't see him, we can't use any type of scientific test to prove he exists, so how can we know this? Frank that question and then dives deep answer to answer questions related to the differences between the Old and the New Testament, Evil, the Canaanite Genocide and is the Old Testament binding on today's believers. Don't miss it.