Galatians 3:29:

And if ye be Christ’s, then are ye Abraham’s seed, and heirs according to the promise.

See also:

Who You Are and What You Have
You Ought to Be Healed
Abraham’s Blessing Is Yours
Objection: God Has Satan on a Leash and Only Permits Him to Do Certain Things to You
Objection: God’s Healing Covenant in the Law of Moses Was Only for the Jews
Notes on Luke 13:11-16