TSK · Galatians 3:18

you seed of Abraham, his servant, you children of Jacob, his chosen ones.

Who is a God like you, who pardons iniquity, and passes over the disobedience of the remnant of his heritage? He doesn't retain his anger forever, because he delights in loving kindness.

to show mercy towards our fathers, to remember his holy covenant,

and if children, then heirs; heirs of God, and joint heirs with Christ; if indeed we suffer with him, that we may also be glorified with him.

For as many as are of the works of the law are under a curse. For it is written, "Cursed is everyone who doesn't continue in all things that are written in the book of the law, to do them."

Now the promises were spoken to Abraham and to his seed. He doesn't say, "To seeds," as of many, but as of one, "To your seed," which is Christ.

If you are Christ's, then you are Abraham's seed and heirs according to promise.