Psalms 145:20,21 - Joseph Benson’s Commentary on the Old and New Testaments

The Lord preserveth all that love him They lie exposed to many dangers in this world from men and things, from visible and invisible foes; but he, by preserving them in their integrity, and enabling them to continue in his love, (John 15:9,) effectually secures them, so that no real evil befalls them. But all the wicked will he destroy Frequently in this world, and infallibly in the next. To protect and save his subjects and destroy their enemies is the finishing part of the regal character as here exemplified in the King of saints. “By his grace he now preserves us from innumerable dangers and temptations, and gradually destroys sin in us; and by his power he will hereafter execute, in the fullest and most extensive sense, this part of his office, when the wicked shall be consumed with the spirit of his mouth, and destroyed with the brightness of his coming.” My mouth shall speak the praise of the Lord, &c. “Having now given the reasons why he had resolved to extol his God and King, and to bless his name for ever and ever, the psalmist concludes with repeating his resolution, and exhorts all the world to follow his example in time and in eternity.” Horne.