In Genesis 17 we read about the Lord giving Abraham the sign of circumcision, which was another sign to confirm his covenant to Abraham. When the Lord tells Abraham that it will be a child from the body of Sarah, and not Ishmael who will be the child of promise, Abraham laughs and asks that it simply be Ishmael. Because Abraham laughs the child of promise will be named, “He laughs,” which is, Isaac. Now God is going to confirm the covenant again to Abraham.
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