Ellicott's Commentary for English Readers - Psalms 2:7
(7) I will declare.—The anointed king now speaks himself, recalling the covenant made with him by Jehovah at his coronation.I will tell.—Better, Let me speak concerning the appointment. The word rendered decree in our version is derived from a root meaning to engrave, and so stands for any formal agreement, but it is usually an ordinance clearly announced by a prophet or some other commissioned interpreter of the Divine will, and consecrated and legalised by mutual adoption by king and... read more
John Dummelow's Commentary on the Bible - Psalms 2:1-12
The historical situation of this Ps. cannot now be recovered. It may refer to some threatened rebellion of subject kings in the early days of Solomon, or to some similar movement under one of the later kings; but it is impossible to give it any precise date. This, however, is of the less importance, as the leading feature of the Ps. is its application to the Messianic King—the ideal ruler of Israel. Some writers deny that it had any historical setting, and hold that it refers exclusively to the... read more