“Him that honoureth Me,” saith God, “I will honor” (1 Sam. 2:30). Now God is honored in His Son. Whoso then believeth that the Son is our Mediator and Saviour, he honoureth the Father, and him again doth God honour; that is to say, adorneth him with gifts, forgiveness of sins, righteousness, the Holy Ghost, and everlasting life. Contrariwise, “They that despise Me, shall be lightly esteemed.”
This then is a general conclusion, “by the deeds of the law no flesh shall be justified,” therefore, “faith only justifieth.”
Martin Luther, Kregel, Galatians 2:15-16, p. 75f.