Charles H. Spurgeon on Psalms 21:13

"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 exaltation of the name of God should be the business of every Christian; but since such poor things as we fail to honour him as he deserves, we may invoke his own power to aid us. Be high, O God, but do thou maintain thy loftiness by thine own almightiness, for no other power can worthily do it. "So will we sing and praise thy power." For a time the saints may mourn, but the glorious appearance of their divine Helper awakens their joy. Joy should always flow in the channel of praise. All the attributes of God are fitting subjects to be celebrated by the music of our hearts and voices, and when we observe a display of his power, we must extol it. He wrought our deliverance alone, and he alone shall have the praise.