Job 4:3 - Joseph Benson’s Commentary on the Old and New Testaments

Behold, thou hast instructed many It is well known thou hast given good counsel unto others, teaching them those lessons which, it appears, thou hast not thyself learned, and wilt not practise, namely, patiently to bear afflictions, and to submit to God's will and providence in all things. And thou hast strengthened the weak hands Hast encouraged those that were dispirited; hast administered counsels, supports, and comforts to such as were unable to bear their burdens, or to do their duty.