Treasury of Scripture Knowledge
Now to Abraham were the promises spoken, and to his Seed. He saith not, "And to seeds," as of many; but as of One, "and to your Seed"; which is Christ.
And he received the sign of circumcision, a seal of the righteousness of the faith which he had while in uncircumcision; that he might be father of all who believe while in uncircumcision, that the righteousness might be reckoned to them;
But ye, brethren, after the manner of Isaac, are children of promise.