Other second century writers add interpretations. The Shepherd of Hermas, visions probably written in Rome, tells us that after baptism's "remission of our former sins" only “one repentance” is left. The reference is to major sins. Irenaeus of Lyons in his treatise Against the Heresies (about 190), compares baptism to the moisture that makes flour into dough and bread. To our bodies, it gives “the unity which brings us to immortality”; to our souls, it conveys the Holy Spirit. For Clement of Alexandria in The Tutor (about 200) baptism means enlightenment, adoption, and being made perfect. As a washing, it cleanses from sin; as a gift of grace, it removes the penalties of sin, as an enlightenment, we are “made keen to see the divine”; and as perfection, noting is lacking for “him who has the knowledge of God”