Explanation posted by John Wesley on 2007-01-01 00:00:00
In this chapter we have,
I. Isaac, the child of promise, born into Abraham's family, ver. 1- 8.
II. Ishmael, the son of the bond-woman, cast out of it, ver. 9-21.
III. Abraham's league with Abimelech, ver. 22-32.
IV. His devotion to God, ver. 33, 34.