Lord God, heavenly Father, we give you worthy thanks for giving a blessed, gracious baptism, first through John the Baptist, and have brought it also to us with the promise of the forgiveness of sins, the Holy Spirit and eternal life through your Son, Jesus Christ. Preserve us in this faith with your grace and mercy, that we may never doubt your promise, but be comforted in all temptations. Grant us your Holy Spirit that we may renounce sin and always continue in the righteousness given us in baptism, until by your grace, we obtain eternal salvation; through your beloved Son, Jesus Christ our Lord, who lives and reigns with you and the Holy Spirit, one true God, now and forever. Amen.
Source: Veit Dietrich
Source of this version: Freely modified from The Lutheran Hymnary, 1913, http://olcc.us/liturgical-resources/collects-veit-dietrich/ (Advent 4)