Q71. Where does Christ promise that we are washed with his blood and Spirit as surely as we are washed with the water of baptism?

In the institution of baptism where he says: "Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit."1 "Whoever believes and is baptized will be saved, but whoever does not believe will be condemned."2 This promise is repeated when Scripture calls baptism the washing of regeneration and the washing away of sins.3