Psalms 103:21 - Clarke's commentary and critical notes on the Bible

Bless ye the LORD, all ye his hosts; ye ministers of his, that do his pleasure. All ye his hosts; ye ministers of his - We know almost nothing of the economy of the heavenly host; and, therefore, cannot tell what is the difference between angels, mighty powers, hosts, and ministers who do his pleasure. All owe their being and all its blessings to God; all depend upon his bounty; and without him they can do nothing; therefore, all should praise him.