Many nominal or liberal Christians say that they believe in Jesus, but reject the Old Testament, saying it is not inspired by God. Or non-Christians say they like Jesus, but they can’t be a Christian because of the OT. In their view, the God of the Old Testament is intolerable. He judges people, throws down nations, sends his people to war, and makes laws that seem barbaric. He can’t be the same God as loving, peaceful, forgiving Jesus.
I was reading Exodus 17:1-7 today. In it the Israelites are grumbling and complaining because they have no water. They quarrel with Moses and accuse him of bringing them into the wilderness to die. So Moses talks to God and God does a miracle by having Moses hit a stone with his staff and water came out of it. It says that the Israelites tested God by saying, “Is the Lord among us or not?”
I am guilty of doing the exact same thing they are.