a. Be wise, O kings: After the words of warning from the LORD’s Anointed, the Psalmist counsels the kings of the earth to give up their foolish defiance of the LORD. b. Serve the LORD with fear, and rejoice with trembling: The Psalmist calls the kings of the earth to surrender to God, giving Him proper reverence. In this submitted, surrendered place they can rejoice—yet with appropriate trembling. c. Kiss the Son: This primarily has in mind the kiss
Psalm 2:10–12