“Righteousness is not placed in Jewish rites, but in the conversion of the heart given in baptism by Christ.  By reason, therefore, of this laver of repentance and knowledge of God, which has been ordained on account of the transgression of God’s people, as Isaiah cries, we have believed, and testify that that very baptism which he announced is alone able to purify those who have repented; and this is the water of life.  But the cisterns which you have dug for yourselves are broken and profitless to you.  For what is the use of that baptism which cleanses the flesh and body alone?  Baptize the soul from wrath and from covetousness, from envy, and from hatred; and, lo! the body is pure.  For this is the symbolic significance of unleavened bread, that you do not commit the old deeds of wicked leaven.  But you have understood all things in a carnal sense, and you suppose it to be piety if you do such things, while your souls are filled with deceit, and, in short, with every wickedness.  Accordingly, also, after the seven days of eating unleavened bread, God commanded them to mingle new leaven, that is, the performance of other works, and not the imitation of the old and evil works.”