If they obey God's admonition and command. They shall spend their days in prosperity; they shall be restored to their farmer prosperity, and shall live and die in it. This he speaks according to the tenor of God's promises, especially in the Old Testament state of the church, and according to the common course and method of God's providence, which Elihu and other good men had observed. Their years in pleasures; abounding in worldly comforts, and being enabled by God to rejoice in them, which is God's gift, Ecclesiastes 3:13, and delighting themselves in God's love and favour to them.
Related Commentaries of Job 36:11
Job 36:11
11 If they obey and serve him, they shall spend their days in prosperity, and their years in pleasures.