And he received the sign of circumcision, a seal of the righteousness of the faith which he had yet being uncircumcised: that he might be the father of all them that believe, though they be not circumcised; that righteousness might be imputed unto them also:
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Gregory The Dialogist
AD 604
Thou seest how the holy Virgin has surpassed even the perfection of the patriarchs, and how she confirms the covenant which was made with Abraham by God, when He said, "This is the covenant which I shall establish between me and thee."