As to justification, St. Ambrose ascribes the whole work to the Holy Spirit, Who seals us in our hearts, as we receive the outward sign in our bodies. Through the Holy Spirit we receive a share of the grace of adoption. Christ was perfect according to the fulness of His Majesty; we are perfected by a continual progress in virtue. De Sp. S. I. 79, 80; De Fide, V. 91.