Galatians 3:16 tells us, “Now to Abraham and his seed were the promises made. He saith not, And to the seeds, as of many; but as of one, And to thy seed which is in Christ.” In Christ, both Jew and Gentile inherit the promises.
Galatians 3:29 says, “And if ye [be] Christs, then ye are Abraham’s seed, and heirs according to the promise.”
We need not take any thought of what we are to say. God will fill us with what we should say, as we need it. He is with us and in us.
Colossians 1:27 says, “To whom God would make known what [is] the riches of the glory of this mystery among the Gentiles; which Christ is in you, the hope of glory:”