Commentaries:
Barnes' Notes
Now know I that the Lord saveth his anointed - Saveth, or will save, the king, who had been anointed, or consecrated by anointing to that office. Compare the note at Psalms 2:2. This, according to the view given in the introduction, is the response of the king. It expresses his confident assurance of success from the interest which the people had expressed in the enterprise, as referred to in the previous verses, and from the earnestness of their prayers in his behalf and in behalf of the enterprise. They had manifested such zeal in the cause, and they had offered so earnest petitions, that he could not doubt that God would smile favorably on the undertaking, and would grant success.
He will hear him from his holy heaven - Margin, "from the heaven of his holiness." So the Hebrew. Compare I Chronicles 21:26; II Chronicles 7:14; Nehemiah 9:27-28; Psalms 14:2; Psalms 102:19. heaven is represented as the dwelling-place of God, and it is there that he hears and answers our prayers. The meaning of the word "hear" in this passage is, that he will "favorably hear," or regard; that is, that he will "answer" the petition, or grant the request.
With the saving strength - That is, he will interpose with that saving strength. Literally, "with the strengths of salvation." The answer to the prayer will be manifest in the strength or power put forth by him to save.
Of his right hand - The right hand is the instrument by which mainly we execute our purposes; and by constant use it becomes in fact more fully developed, and is stronger than the left band. Hence, it is used to denote "strength." See Exodus 15:6; Judges 5:26; see Psalms 17:7, note; Psalms 18:35, note.
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