Large Catechism, Baptism--Martin Luther

“…one sees what a great, excellent thing Baptism is. It delivers us from the devil’s jaws and makes us God’s own. It suppresses and takes away sin and then daily strengthens the new man. It is working and always continues working until we pass from this estate of misery to eternal glory.

For this reason let everyone value his Baptism as a daily dress (Galatians 3:27) in which he is to walk constantly. Then he may ever be found in the faith and its fruit, so that he may suppress the old man and grow up in the new.”