He writes things like don’t be focused on this world, but be focused on the City of God. And other things like don’t be afraid of people or dying, because God is the only one that can destroy your soul. There are a lot of Bible verses about fear. There is Psalms 56:3-4 “When I am afraid, I put my trust in you. In God, whose word I praise-in God I trust and am not afraid. What can mere mortals do to me?” Another one is Mathew 6:26-27 “Look at the birds of the air; they do not sow or reap or store away in barns, and yet your heavenly Father feeds them. Are you not much more valuable than they? Can any one of you by worrying add a single hour to your life?” Fear is pretty much unless because there isn’t too much to fear. The only thing you should fear is God, because He can save you from your fears. Mathew 10:28 ” Do not be afraid of those who kill the body but cannot kill the soul. Rather, be afraid of the One who can destroy both soul and body in hell.” And that one is God.