Psalms 21:7

In this there is an eye to Messiah the Prince, and the glory of his kingdom; for to him divers passages in this psalm are more applicable than to David himself. The Subject's Thanksgiving. 1 The king shall joy in thy strength, O L ORD ; and in thy salvation how greatly shall he rejoice!

"For the king trusteth in the Lord." Our Lord, like a true King and leader, was a master in the use of the weapons, and could handle well the shield of faith, for he has set us a brilliant example of unwavering confidence in God. He felt himself safe in his Father's care until his hour was come, he knew that he was always heard in heaven; he committed his cause to him that judgeth right, and in his last moments he committed his spirit into the same hands. The joy expressed in the former verses was the joy of faith, and the victory achieved was due to the same precious grace. A holy confidence in Jehovah is the true mother of victories. This psalm of triumph was composed long before our Lord's conflict began, but faith overleaps the boundaries of time, and chants her "Io triumphe, " while yet she sings her battle song. "Through the mercy of the Most High he shall not be moved." Eternal mercy secures the mediatorial throne of Jesus. He who is Most High in every sense, engages all his infinite perfections to maintain the throne of grace upon which our King in Zion reigns. He was not moved from his purpose, nor in his sufferings, nor by his enemies, nor shall he be moved from the completion of his designs. He is the same yesterday, to-day, and for ever. Other empires are dissolved by the lapse of years, but eternal mercy maintains his growing dominion evermore; other kings fail because they rest upon an arm of flesh, but our monarch reigns on in splendour because he trusteth in Jehovah. It is a great display of divine mercy to men that the throne of King Jesus is still among them: nothing but divine mercy could sustain it, for human malice would overturn it to-morrow if it could.

The king trusteth in the Lord - It was not by my skill or valor that I have gained this victory, but by faith in the strong protecting, and conquering arm of Jehovah. He shall not be moved - Perhaps this may be best understood of him who was David’s prototype. His throne, kingdom, and government, shall remain for ever.

For the king - David, the author of the psalm. Trusteth in the Lord - All these blessings have resulted from his confiding in God, and looking to him for his favor and protection. And through the mercy of the Most High - The favor of Him who is exalted above all; the most exalted Being in the universe. The word “mercy” here is equivalent to “favor.” He had already experienced God’s favor; he looked for a continuance of it; and through that favor he was confident that he would never be shaken in his purposes, and that he would never be disappointed. He shall not be moved - He shall be firmly established. That is, his throne would be firm; he himself would live a life of integrity, purity, and prosperity; and the promises which had been so graciously made to him, and which extended so far into the future, would all be acomplished. The truth taught here is, that however firm or prosperous our way seems to be, the continuance of our prosperity, and the completion of our hopes and our designs, depend wholly on the “mercy” or the favor of the Most High. Confiding in that, we may feel assured that whatever changes and reverses we may experience in our temporal matters, our ultimate welfare will be secure. Nothing can shake a hope of heaven that is founded on his gracious promises as made through a Saviour.