Genesis 16:12
And he will be a wild man; his hand will be against every man, and every man’s hand against him; and he shall dwell in the presence of all his brethren.
Cross-reference
Genesis 21:20
Prophetic fulfillment
Genesis 21:20 says Ishmael 'became an archer, living in the wilderness of Paran' — a direct fulfillment of the prophecy that he'd be a wild, independent man.
Genesis 25:18
Prophetic fulfillment
Genesis 25:18 confirms the prophecy about Ishmael's descendants living in hostility, fulfilling Genesis 16:12.
Genesis 27:40
Parallel
In Genesis 27:40, Esau's fate parallels Ishmael's: both brothers destined for conflict and eventual independence.