Which son would God establish His everlasting covenant with?
God would establish His everlasting covenant with Isaac, the son Sarah would bear, not Ishmael. In Genesis 17:19 God told Abraham that Sarah's son would be named Isaac and that He would establish His covenant with him for an everlasting covenant.
Les teaches that the covenant promise is placed on Isaac, not Ishmael. When Abraham asked that Ishmael might live before God, God refuted him and said Sarah, not the slave girl, would bear a son named Isaac. God declared, 'I will establish my covenant with him for an everlasting covenant.' Les explains that every 'I will' from God is a promise, so Isaac becomes the promised son.
And God said, Sarah thy wife shall bear thee a son indeed; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his seed after him.
More Questions
Who did God say the covenant son would be born to, Sarah or the slave girl?
God refuted Abraham's Ishmael proposal by saying Sarah his wife, not the slave girl, would bear the son, and the son was to be named Isaac.
What did God promise Abraham about the son he would have?
God had promised that Abraham would have a son and that he was to name him Isaac.