Job 4:3

1 Then Eliphaz the Temanite answered and said,

2 If we assay to commune with thee, wilt thou be grieved? but who can withhold himself from speaking?

Behold, thou hast instructed many, and thou hast strengthened the weak hands.

4 Thy words have upholden him that was falling, and thou hast strengthened the feeble knees.

5 But now it is come upon thee, and thou faintest; it toucheth thee, and thou art troubled.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
Surely you have instructed many, and have strengthened their feeble hands.
KJV
Behold, thou hast instructed many, and thou hast strengthened the weak hands.
WEB
Behold, you have instructed many, you have strengthened the weak hands.
ASV
Behold, thou hast instructed many, And thou hast strengthened the weak hands.
DARBY
Behold, thou hast instructed many, and thou hast strengthened the weak hands;
BLB
Behold, you have instructed many, and you have strengthened hands [that are] weak.
ÅB
Du har selv vist mange til rette, og maktløse hender styrket du;
OTB
Tenk på hvordan du har lært mange,
og hvordan du har styrket svake hender.
B1930
Du har selv vist mange til rette, og maktløse hender styrket du;

Study notes (Tyndale)

Original text and word study

Cross references