Romans 9:7
they are not all children of Abraham because they are Abraham's descendants. The promise was, In Isaac shall thy posterity be called.
Hebrews 11:18
of whom it had been said, It is through Isaac that your posterity will be traced.
Luke 3:8
Then bring forth fruit befitting your penitence, and do not begin to say to yourselves, "We have Abraham as our father." I tell you that God is able to raise up sons to Abraham out of these stones.
Luke 16:24-25
"And he cried out and said, 'Father Abraham have mercy on me; and send Lazarus to dip the tip of his finger in water and cool my tongue, for I am in anguish in this flame.'
Luke 16:30
"'Nay, Father Abraham,' he said 'but if some one went to them from the dead they would repent.'
John 8:33
"We are descendants of Abraham," they replied, "and have never been in slavery to any man. What do you mean by saying, 'You shall become free'?"
John 8:37-39
"I know you are Abraham's descendants; but you are seeking to kill me, Because my teaching has no place in you.
Galatians 4:23
but while the son by the slave woman was born according to the flesh, the son by the free woman was born in fulfilment of a promise.
Philippians 3:3
For we are the true circumcision, who worship God in the spirit, and make our boast in Christ Jesus, and have no confidence in outward rites,