Be exalted, O LORD, in your strength! We will sing and praise your power.
David could have given thanks to God in private, but he testified publicly that whatever blessings God conferred upon him redounded to the common good of all His people. Yet above all, the Holy Spirit directs our minds here to Christ, who was the end and perfection of this kingdom, teaching us we cannot be saved except under the Head God Himself appointed.
AI summary
Commenting on Psalm 21:1-13
"Be thou exalted, Lord, in thine own strength." A sweet concluding verse. Our hearts shall join in it. It is always right to praise the Lord when we call to remembrance his goodness to his Son, and the overthrow of his foes.
The psalmist, having taught his people to look back with joy and praise on what God had done for him and them, here teaches them to look forward with faith, and hope, and prayer, upon what God would further do for them: The king rejoices in God (Psa 21:1), and therefore we will be thankful; the king trusteth in God (Psa 21:7), therefore will we be encouraged.
Commenting on Psalm 21:7-13