Offspring - Galatians 3:16

Galatians 3:16 ESV 

Now the promises were made to Abraham and to his offspring. It does not say, “And to offsprings,” referring to many, but referring to one, “And to your offspring,” who is Christ.

So are we the offspring of Abraham? Yes. Why? We are the body of Christ and have become Christ in the world. We are the one because we are one in Christ.