I don't know how tragedy has occurred or will occur in your life. There are greater and lesser sorts of tragedies. There are reversible and irreversible tragedies. When you lose four children, that is irreversible. Though we have a hope beyond this life, the Kilic family will never hold those four children again in this lifetime.
Some tragedies are reversible.
Things just go wrong, but either God moves in a miraculous way or situations change and the tragedy somehow dissipates. Tragedy is a part of this life. Though the mountains be carried into the midst of the sea, though its waters roar and be troubled, though the mountains shake with its swelling, the Lord of Hosts is with us. The writer reminds us to be still and know that God is God. In the world you will have tribulation, but be of good cheer.