Commentaries:
Barnes' Notes
For it is written - Gen. 16; 21.
Abraham had two sons - Ishmael and Isaac. Abraham subsequently had several sons by Keturah after the death of Sarah; Genesis 26:1-6. But the two sons by Hagar and Sarah were the most prominent, and the events of their lives furnished the particular illustration which Paul desired.
The one by a bond-maid - Ishmael, the son of Hagar. Hagar was an Egyptian slave, whom Sarah gave to Abraham in order that he might not be wholly without posterity; Genesis 16:3.
The other by a free woman - Isaac, the son of Sarah; Genesis 21:1-2.
Other Barnes' Notes entries containing Galatians 4:22:
John 8:33
Galatians 5:13
James 4:11
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