In Genesis 16:11-16, Ishmael's birth to Hagar is recorded, providing the origin of the first son listed here.

In Genesis 17:19-21, God promises Isaac as the covenant son and also blesses Ishmael, clarifying the status of both brothers listed here.

In Genesis 21:2-5, Isaac's birth and circumcision are described, confirming his place as Abraham's promised son listed here.

In Genesis 21:12, God declares Isaac as the promised heir, distinguishing him from Ishmael who is also listed here.

Genesis 16:15 records the birth of Ishmael, the son of Abraham mentioned here.

In Genesis 21:9, Ishmael mocks Isaac, an event that foreshadows the tension between the brothers listed here.

In Genesis 21:10, Sarah demands Ishmael's expulsion, highlighting the division between Abraham's sons listed here.

Matthew 1:2 traces only Isaac's line, contrasting with this verse which includes both Isaac and Ishmael.