Proverbs 18:10,11

These two verses are about different castles. A castle was a strong building, which would be safe, even during a war.

A good man trusts in God. He can relax, because God will keep him safe.

A rich man trusts in a strong building. He thinks that his money is safe in his castle. He trusts his castle. He does not trust God. This rich man thinks that thieves cannot enter the castle’s high walls. He is wrong. He is not safe.