Romans 4:11
Douay-Rheims
And he received the sign of circumcision, a seal of the justice of the faith, which he had, being uncircumcised; that he might be the father of all them that believe, being uncircumcised, that unto them also it may be reputed to justice:
Tertullian
For albeit it is subsequently that he is called "a father of many nations," still it is of those (nations) who, as the fruit of the "faith" which precedes digamy, had to be accounted "sons of Abraham."
Source details
A.D. 220 · on Rom 4:11 (On Monogamy)
Imported from an open dataset — not yet checked against the printed edition.