Ps 150:2

“"Praise Him in His deeds of strength;" or, as others have explained it, "in His deeds of power: praise Him according to the multitude of His greatness" [Psalm 150:2]. Why should not they also be called "the works of" God's "strength," which He has done in them: yea rather, they themselves are the works of His strength; just as it is said, "We are the righteousness of God in Him." For what more powerful than that He should reign for ever, with all His enemies put under His feet? Why should not they also be "the multitude of His greatness"? Not that whereby He is great, but whereby He has made them great, many as they are, that is, thousands of thousands. Just as righteousness too is understood in two ways, that whereby He is righteous, and that which He works in us, so as to make us His righteousness. These same saints are signified by all the musical instruments in succession, to praise God in. For what the Psalmist began with, saying, "Praise the Lord in His saints," that he carries out, signifying in various ways these same saints of His.”