What does the Bible say about the religion of Ishmael?

The religion of Ishmael symbolizes the belief that salvation can be achieved through human effort rather than through God's sovereign grace. In Genesis 25, the names of Ishmael's sons reflect this idea of striving for salvation through works. The narrative is interpreted as an allegory of law versus grace, where Ishmael's birth through Hagar represents man's attempt to fulfill God's promise by his own strength, while Isaac's birth through Sarah exemplifies the divine promise of salvation. This distinction is emphasized in Galatians 4, where Paul compares the two covenants, illustrating that one leads to bondage whereas the other provides freedom through grace.