Martin Luther, speaking of John 14:16, shows that the true God is the God of comfort:
What are the devil, death, and all things over against the eternal, almighty majesty of God the Father, Son, and Holy Spirit, who want to be and are our Comforter? For if He who is sent is called a Comforter, then both He who sent Him and He by whom He is sent must be the same Comforter. Then there is surely no God besides Him who is a Comforter. And henceforth he who wants to know God aright and name Him appropriately must call Him “Comforter” or, as St. Paul terms Him in Rom. 15:5, “the God of Comfort,” namely, for those who are frightened and have no other comfort. They must not conceive of God otherwise than as a Comforter of the wretched and troubled. They must give the lie both to the devil, who threatens with God’s wrath and with hell, and to their own heart, and say to the devil: “You are a false spirit of lies!” and to their heart: “You are a false, foolish heart!”
(From Sermons on the Gospel of St. John Chapters 14-16, which is v.24 of the 55-volume Works edited by Jaroslav Pelikan.)