Romans 9:7

Neither, because they are seed of Abraham, are all children, - but, In Isaac, shall there be called unto thee a seed.

Genesis 21:12

And God said unto Abraham Let it not be grievous in thine eyes concerning the boy and concerning thy bondwoman, In all that Sarah may say unto thee, hearken to her voice, - For in Isaac, shall there be called to thee - a seed.

Hebrews 11:18

Even him of whom it had been said - In Isaac, shall there be called to thee, a seed:

Luke 3:8

Bring forth, therefore, fruits worthy of repentance, and do not begin to be saying within yourselves, As our father, we have, Abraham; for, I say unto you - God is able, out of these stones, to raise up children unto Abraham.

Luke 16:24-25

And, he, calling out, said - Father Abraham! have mercy upon 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, from the dead, should go unto them, they would repent.

John 8:33

They made answer unto him - Seed of Abraham, are we, and, unto no one, have been brought into bondage, at any time: How sayest, thou, Free, shall ye be made?

John 8:37-39

I know that ye are, seed of Abraham; but ye are seeking to kill me, because, my word, findeth no place in you.

Galatians 4:23

But, he that was of the bondmaid, after the flesh, had been born, whereas, he that was of the free woman, through means of a promise.

Philippians 3:3

For, we, are the circumcision, who in the Spirit of God, are doing divine service, and are boasting in Christ Jesus, and, not in flesh, having confidence, -

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.

General references

Bible References

Because

Luke 3:8
Bring forth, therefore, fruits worthy of repentance, and do not begin to be saying within yourselves, As our father, we have, Abraham; for, I say unto you - God is able, out of these stones, to raise up children unto Abraham.
Luke 16:24
And, he, calling out, said - Father Abraham! have mercy upon 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, seed of Abraham; but ye are seeking to kill me, because, my word, findeth no place in you.
Philippians 3:3
For, we, are the circumcision, who in the Spirit of God, are doing divine service, and are boasting in Christ Jesus, and, not in flesh, having confidence, -

In isaac

Genesis 21:12
And God said unto Abraham Let it not be grievous in thine eyes concerning the boy and concerning thy bondwoman, In all that Sarah may say unto thee, hearken to her voice, - For in Isaac, shall there be called to thee - a seed.
Hebrews 11:18
Even him of whom it had been said - In Isaac, shall there be called to thee, a seed:

General references

Genesis 21:3
And Abraham called the name of his son that was born to him, whom, Sarah, bare to him, Isaac.
Genesis 25:5
And Abraham gave all that he had to Isaac;