Therefore it is of faith, that it might be by grace; to the end the promise might be sure to all the descendants; not to those only who are of the law, but to those also who are of the faith of Abraham; who is the father of us all,
All Commentaries on Romans 4:16 Go To Romans 4
George Leo Haydock
AD 1849
There are two kinds of children of Abraham, to whom alone these promises are made; the one is according to the flesh, the other according to the spirit. The former of these had no more part in the promises made to him and his seed than the Gentiles, unless they imitated the fidelity and obedience of their father. (Calmet)
It is in this sense of spiritual father, that the priest at the altar, speaking in the name of the faithful, calls Abraham our patriarch. (Estius)