Job 36:11

“If they obey and serve [him], etc.] That is, God, to whom so many things are ascribed in the preceding verses; and who only is to be obeyed and served in a religious way, with the obedience of faith and love, in all his commands and ordinances. But here not so much obedience to his word, his law or Gospel, as to his rod is intended: “if they hear”, etc. f1237; hear the rod and him that has appointed it; hearken to his reproving, instructing, and commanding voice, in affliction; to his calls, cautions, and admonitions thereby given; and act according to them; humble themselves under the mighty hand of God, and return from iniquity: they shall spend their days in prosperity, and their years in…”

“serve--that is, worship; as in Isa 19:23. God is to be supplied (compare Isa 1:19-20).”

“If they obey and serve him - That is, if, as the result of their afflictions, they repent of their sins, seek his mercy, and serve him in time to come, they shall be prospered still. The design of affliction, Elihu says, is, not to cut them off, but to bring them to repentance. This sentiment he had advanced and illustrated before at greater length; see the notes at Job 33:23-28. The object of all this is, doubtless, to assure Job that he should not regard his calamities either as proof that he had never understood religion - as his friends maintained; or that God was severe, and did not regard those that loved and obeyed him - as Job had seemed to suppose; but that there was something in…”

“36:11 If they listen and obey God, they will be blessed: This is a valid biblical principle of repentance (see 11:13-19; 22:21-25; Deut 4:30; Jer 7:23; 26:13).”

“If: Job 22:21; Deu 4:30; Jer 7:23, Jer 26:13; Rom 6:17; Heb 11:8 spend: Job 11:13-19, Job 21:11, Job 22:23, Job 42:12; Ecc 9:2, Ecc 9:3; Jam 5:5; Rev 18:7 Job 36:12”

“11 If they hear and yield, They pass their days in prosperity And their years in pleasure. 12 And if they hear not, They pass away by the bow And expire in lack of knowledge. Since a declaration of the divine will has preceded in Job 36:10, it is more natural to take ויעבדוּ in the sense of obsequi, to do the will of another (as Kg1 12:7, comp. מעבּד from עבד in the generalized sense of facere), than, with Umbr., in the sense of colere scil. Deum (as Isa 19:23, Arab. ‛âbid, one who reveres God, a godly person). Instead of יבלּוּ, Isa 65:22 (on which the Masora observes לית, i.e., "nowhere else") and Job 21:13 Chethb, 'it is here without dispute יכלּוּ (Targ. ישׁלּמוּן, peragent, as Eze…”