Psalms 98:3

3. He hath remembered That is, to fulfil and make good his promise. Here is a recognition of covenant promise and relation toward the house of Israel.

Ends of the earth A clear anticipation of the subjection of the Gentile nations to Christ. The judgments of Jehovah, like the miracles of Egypt, of the Red Sea, and of the wilderness, in Moses’s time, should cause the distant nations to tremble and submit.