"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""

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I [i.e., God] have given you baptism as a gift for the forgiveness of sins, and preach to you unceasingly by word of mouth concerning this treasure, sealing it with the Sacrament of my body and blood, so that you need never doubt. True, it seems little and insignificant that by the washing of water, the Word, and the Sacrament this should all be effected. But don't let your eyes deceive you.

— Martin Luther