Job 42:9
So Eliphaz the Temanite and Bildad the Shuhite and Zophar the Naamathite went, and did according as the Lord commanded them: the Lord also accepted Job.
Cross-references
Job 42:8
Citation
Job 42:8 contains the command the friends obey — this verse shows their compliance with that specific instruction.
Job 33:26
Parallel
In Job 33:26, Elihu says God accepts the prayer of the repentant — here Job's prayer is accepted, fulfilling that principle.
Genesis 20:17
Parallel
In Genesis 20:17, Abraham prays for Abimelech and God heals him — a direct parallel to Job interceding for his friends and being accepted.
Ezekiel 14:14
Contrast
Ezekiel 14:14 says Job's righteousness would only save himself — here his intercession saves his friends, contrasting the limitation.