Romans 4:13

Again, the promise that he should inherit the world did not come to Abraham or his posterity conditioned by Law, but by faith-righteousness.

Galatians 3:29

And if you belong to Christ, then you are indeed true descendants of Abraham, and are heirs in fulfilment of the promise.

Romans 9:8

In other words, it is not the children by natural descent who count as God's children, but the children made such by the promise are regarded as Abraham's posterity.

Galatians 3:16-18

(Now the promises were given to Abraham and to his seed. God did not say 'and to seeds,' as if speaking of many, but 'and to your seed,' since He spoke of only one--and this is Christ.)

Treasury of Scripture Knowledge

Summary

For the promise, that he should be the heir of the world, was not to Abraham, or to his seed, through the law, but through the righteousness of faith.

Through the

But through

General references

Bible References

Through the

Galatians 3:16
(Now the promises were given to Abraham and to his seed. God did not say 'and to seeds,' as if speaking of many, but 'and to your seed,' since He spoke of only one--and this is Christ.)

But through

Romans 4:11
Before, not after. And he received circumcision as a sign, a mark attesting the reality of the faith-righteousness which was his while still uncircumcised, that he might be the forefather of all those who believe even though they are uncircumcised--in order that this righteousness might be placed to their credit;

General references

Galatians 4:28
But you, brethren, like Isaac, are children born in fulfilment of a promise.