Blessed be the God and Father of our Lord Jesus Christ, the Father of mercies and God of all comfort, who comforts us in all tribulation, that we may be able to comfort those who are in any trouble, with the comfort with which we ourselves are comforted by God.
-2 Corinthians 1:3-4

Comfort is the word that keeps popping up in this verse. It means a feeling of relief so this verse means that God is a god of relieving pain. If you are sorrowful, then God can take that agony away. He will always be there for you through all your troubles, and then you can help others go through their misfortunes. God shows us so we can show others.