The Church was redeemed at the price of Christ's blood. Jew or Greek, it makes no difference; but if he has believed, he must circumcise himself from his sins [in baptism (Col. 2:11-12)] so that he can be saved . . . for no one ascends into the kingdom of heaven except through the sacrament of baptism . . . "Unless a man be born again of water and the Holy Spirit, he cannot enter the kingdom of God"
AmbroseThe wise man does nothing but what can be done openly and without falseness, nor does he do anything whereby he may involve himself in any wrong-doing, even where he may escape notice. For he is guilty in his own eyes before being so in the eyes of others; and the publicity of his crime does not bring him more shame than his own consciousness of it.
Ambrose