Job 4:3 recalls Job strengthening weak hands; Job 26:2 sarcastically says his friends are no help — direct verbal echo and ironic reversal.

Job 4:4 continues the image of strengthening feeble knees, same ironic reversal as in Job 26:2.

Job 16:5 describes true comfort he would give — contrasting with the false help mocked in 26:2.

Job 16:2 calls them 'miserable comforters' — directly explains why the 'help' in 26:2 is sarcastic.

In Job 27:12, Job continues his rebuke, saying the friends have seen God's ways yet speak worthless talk — echoing his sarcastic complaint in 26:2 about their lack of help.

In Job 32:3, Elihu is angry because the friends failed to refute Job — mirroring Job's own accusation in 26:2 that they offered no real help.

Isaiah 35:3 commands strengthening feeble hands — the very action Job sarcastically credits his friends with failing to do.