God did not create evil, but in a mystery known only to Him He permits it to exist. Faith gives us the certainty that God would not permit an evil if He did not cause a good to come from that very evil, by ways that we shall fully know only in eternal life.
Look, if he says he created calamity, I believe him. Can evil exist without his permission? Can evil do anything that he doesn’t know about? Is evil greater than God? No. God is in charge of ALL things, because he CREATED all things. I have no problem with him creating evil, because it suits his purposes, which we cannot fathom. I have faith that he uses evil for our betterment. I have faith that He is in control of evil, and not the other way around.