33. But Luke, who ascends up through the generations from the baptism of the Lord, makes up the number seventy-seven, beginning to ascend from our Lord Jesus Christ Himself through Joseph, and coming through Adam up to God. And that is, because by this number is signified the abolition of all sins, which takes place in Baptism. Not that the Lord Himself had any thing to be forgiven Him in baptism, but that by His humility He set forth its usefulness to us. And though that was only the baptism of John, yet there appeared in it to outward sense the Trinity of the Father, the Son, and the Holy Ghost; and hereby was consecrated the Baptism of Christ Himself, whereby Christians were to be baptized. The Father in the voice which came from heaven, the Son in the person of the Mediator Himself, the Holy Ghost in the dove.