The haters of the Lord should have submitted themselves— The haters of the Lord should have lied to him. "The enemies of the Lord; or, (passively, by a different pointing,) the hated of the Lord, who were at the same time enemies of the Jewish nation should have been obliged to speak, fawn, and pretend great respect to him; i.e. to the Jewish people." The course of the sense requires it to be thus understood. The singular number is no objection; for that recurs in the next verse, and there is through this whole speech of God a frequent change of number and person.
Related Commentaries of Psalms 81:15
Psalms 81:15
15 The haters of the LORD should have submittedb themselves unto him: but their time should have endured for ever.