Demonstrate by your lives that you have [really] repented, and quit saying to yourselves, ‘We claim Abraham as our forefather,’ because I tell you, God is able to make Abraham’s children out of these stones.
Now standing near Jesus’ cross were His mother; His mother’s sister [i.e., Salome, the mother of James and John, the sons of Zebedee. See Matt. 27:55; Mark 15:40]; Mary the wife of Clopas [i.e., the mother of James and Joseph. See Matt. 27:55]; and Mary, from Magdala.
They answered Him, “Our forefather was Abraham.” Jesus replied to them, “If you were Abraham’s descendants, you would do the [kinds of] deeds that Abraham did.
Neither are all [Jewish] people children [of God], [simply] because they are Abraham’s descendants. But [Gen. 21:12 says], “It is through Isaac that you [i.e., Abraham] will have descendants.”