Romans 9:7

neither, because they are Abraham's seed, are they all children; but, "In Isaac shall your seed be called."

Hebrews 11:18

to whom it was said, "In Isaac shall your seed be called;"

Luke 3:8

Produce, therefore, fruits worthy of repentance; and begin not to say within yourselves, 'We have Abraham as our father'; for I say to you, that God is able out of these stones to raise up children to Abraham.

Luke 16:24-25

And, crying, he said, 'Father Abraham, have mercy on me, and send Lazarus, that he may dip the tip of his finger in water, and cool my tongue; because I am in anguish in this flame!'

Luke 16:30

But he said, 'Nay, father Abraham; but, if one go to them from the dead, they will repent.'

John 8:33

They answered Him, "We are Abraham's seed, and to no one have we at any time been in bondage; how sayest Thou, 'Ye shall be made free?'

John 8:37-39

I know that ye are Abraham's seed; but ye are seeking to kill Me, because My word has no place in you.

Galatians 4:23

But the one by the bond-woman has been born after the flesh; and the one by the free-woman, through promise.

Philippians 3:3

For we are the circumcision, who worship by the Spirit of God, and glory in Christ Jesus, and have no confidence in flesh:

Treasury of Scripture Knowledge

Summary

Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called.

In isaac

Bible References

Because

Luke 3:8
Produce, therefore, fruits worthy of repentance; and begin not to say within yourselves, 'We have Abraham as our father'; for I say to you, that God is able out of these stones to raise up children to Abraham.
Luke 16:24
And, crying, he said, 'Father Abraham, have mercy on me, and send Lazarus, that he may dip the tip of his finger in water, and cool my tongue; because I am in anguish in this flame!'
John 8:37
I know that ye are Abraham's seed; but ye are seeking to kill Me, because My word has no place in you.
Philippians 3:3
For we are the circumcision, who worship by the Spirit of God, and glory in Christ Jesus, and have no confidence in flesh:

In isaac

Hebrews 11:18
to whom it was said, "In Isaac shall your seed be called;"