John 8:33-41

8:33 “We are descendants of Abraham,” they replied, “and have never been anyone’s slaves! How can you say, ‘You will become free’?” 8:34 Jesus answered them, “I tell you the solemn truth, everyone who practices sin is a slave of sin. 8:35 The slave does not remain in the family forever, but the son remains forever. 8:36 So if the son sets you free, you will be really free. 8:37 I know that you are Abraham’s descendants. But you want to kill me, because my teaching makes no progress among you. 8:38 I am telling you the things I have seen while with the Father; as for you, practice the things you have heard from the Father!”

8:39 They answered him, “Abraham is our father!” Jesus replied, “If you are Abraham’s children, you would be doing the deeds of Abraham. 8:40 But now you are trying to kill me, a man who has told you the truth I heard from God. Abraham did not do this! 8:41 You people are doing the deeds of your father.”

Then they said to Jesus, “We were not born as a result of immorality! We have only one Father, God himself.”

Matthew 3:9

3:9 and don’t think you can say to yourselves, ‘We have Abraham as our father.’ For I tell you that God can raise up children for Abraham from these stones!

Romans 9:7-9

9:7 nor are all the children Abraham’s true descendants; rather “through Isaac will your descendants be counted.” 9:8 This means it is not the children of the flesh who are the children of God; rather, the children of promise are counted as descendants. 9:9 For this is what the promise declared: “About a year from now I will return and Sarah will have a son.”