“Two Sons.”

Those false teachers would persuade the brethren that in turning from whole-hearted faith in Christ and trusting to works which they themselves could do, they would become children of Abraham, and so heirs of the promises. They forgot that Abraham had two sons. I myself have talked with a Jew according to the flesh, who did not know that Abraham had more than one son; and there are many Christians who seem to think that to be descended from Abraham, after the flesh, is all-sufficient to insure one a share in the promised inheritance. “They which are the children of the flesh, these are not the children of God; but the children of the promise are counted for the seed.” Romans 9:8. Now of the two sons of Abraham, one was born after the flesh, and the other was by promise, born of the Spirit. “By faith even Sarah herself received power to conceive seed when she was past age, since she counted Him faithful who had promised.” Hebrews 11:11, R.V. Hagar was an Egyptian slave. The children of a slave woman are always slaves, even though their father be a freeman; and so Hagar could bring forth children only to bondage. But long before Ishmael was born, the Lord had plainly signified to Abraham, who wished that his servant Eliezer might be his heir, that it was not a bond-servant, even though born in his house, that He had promised him, but a free-born son,—a son born of a freewoman. God has no slaves in His kingdom.GTI 183.1