29 If you belong to Christ, then you are Abraham’s seed, and heirs according to the promise.

Read Galatians 3:29 Using Other Translations

And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise.
And if you are Christ's, then you are Abraham's offspring, heirs according to promise.
And now that you belong to Christ, you are the true children of Abraham. You are his heirs, and God’s promise to Abraham belongs to you.