Coffman Commentaries on the Bible - Genesis 21:8-10
"And the child grew, and was weaned: and Abraham made a great feast on the day that Isaac was weaned. And Sarah saw the son of the Egyptian, whom she had borne unto Abraham, mocking. Wherefore she said unto Abraham, Cast out this handmaid and her son; for the son of this handmaid shall not be heir with my son, even with Isaac.""The child grew, and was weaned ..." "This occurred in his second or third year, as is usual among Orientals."[2] The apocryphal book of 2Maccabees has an account of a... read more
E.W. Bullinger's Companion Bible Notes - Genesis 21:10
Cast out, &c. See the Divine interpretation. Galatians 1:3 , Gal 1:6-29 ; Galatians 4:22-31 . with my son, &c Hebrew idiom "with my son with Isaac". Compare Numbers 12:8 . read more