Romans 4:16

For this reason it is of faith, so that it may be through grace; and so that the word of God may be certain to all the seed; not only to that which is of the law, but to that which is of the faith of Abraham, who is the father of us all,

Romans 9:8

That is, it is not the children of the flesh, but the children of God's undertaking, who are named as the seed.

Romans 15:8

Now I say that Christ has been made a servant of the circumcision to give effect to the undertakings given by God to the fathers,

Galatians 3:22

However, the holy Writings have put all things under sin, so that that for which God gave the undertaking, based on faith in Jesus Christ, might be given to those who have such faith.

Isaiah 51:2

Let your thoughts be turned to Abraham, your father, and to Sarah, who gave you birth: for when he was but one, my voice came to him, and I gave him my blessing, and made him a great people.

Romans 3:24-26

And they may have righteousness put to their credit, freely, by his grace, through the salvation which is in Christ Jesus:

Romans 4:11

And he was given the sign of circumcision as a witness of the faith which he had before he underwent circumcision: so that he might be the father of all those who have faith, though they have not circumcision, and so that righteousness might be put to their account;

Romans 5:1

For which reason, because we have righteousness through faith, let us be at peace with God through our Lord Jesus Christ;

Galatians 3:7-12

Be certain, then, that those who are of faith, the same are sons of Abraham.

Ephesians 2:5

Even when we were dead through our sins, gave us life together with Christ (by grace you have salvation),

Ephesians 2:8

Because by grace you have salvation through faith; and that not of yourselves: it is given by God:

Titus 3:7

So that, having been given righteousness through grace, we might have a part in the heritage, the hope of eternal life.

Hebrews 6:13-19

For when God made his oath to Abraham, because there was no greater oath, he made it by himself,

2 Peter 1:10

For this reason, my brothers, take all the more care to make your selection and approval certain; for if you do these things you will never have a fall:

Treasury of Scripture Knowledge

Summary

Therefore it is of faith, that it might be by grace; to the end the promise might be sure to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham; who is the father of us all,

But to

The father

Bible References

Of faith

Romans 3:24
And they may have righteousness put to their credit, freely, by his grace, through the salvation which is in Christ Jesus:
Romans 5:1
For which reason, because we have righteousness through faith, let us be at peace with God through our Lord Jesus Christ;
Galatians 3:7
Be certain, then, that those who are of faith, the same are sons of Abraham.
Ephesians 2:5
Even when we were dead through our sins, gave us life together with Christ (by grace you have salvation),
Titus 3:7
So that, having been given righteousness through grace, we might have a part in the heritage, the hope of eternal life.

The promise

Hebrews 6:13
For when God made his oath to Abraham, because there was no greater oath, he made it by himself,
2 Peter 1:10
For this reason, my brothers, take all the more care to make your selection and approval certain; for if you do these things you will never have a fall:

But to

Romans 4:11
And he was given the sign of circumcision as a witness of the faith which he had before he underwent circumcision: so that he might be the father of all those who have faith, though they have not circumcision, and so that righteousness might be put to their account;

The father

Romans 9:8
That is, it is not the children of the flesh, but the children of God's undertaking, who are named as the seed.
Isaiah 51:2
Let your thoughts be turned to Abraham, your father, and to Sarah, who gave you birth: for when he was but one, my voice came to him, and I gave him my blessing, and made him a great people.

General references

Genesis 13:16
And I will make your children like the dust of the earth, so that if the dust of the earth may be numbered, then will your children be numbered.
Luke 10:26
And he said to him, What does the law say, in your reading of it?
Galatians 3:9
So then those who are of faith have a part in the blessing of Abraham who was full of faith.
Galatians 4:28
Now we, brothers, as Isaac was, are the children of the undertaking of God.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain