Adam Clarke on Psalms 97:7

Confounded be fell they - Rather, They shall be confounded that boast themselves in idols. There is a remarkable play on the letters here, המתהללים hammithhalelim, who move like madmen; referring to the violent gestures practiced in idolatrous rites.

Of idols - באלילים baelilim, in vanities, emptinesses; who "make much ado about nothing," and take a mad and painful pleasure in ridiculous and unprofitable ceremonies of religion.

Worship him - Who? Jesus: so says the apostle, Heb 1:6. Who will dare to dispute his authority?

All ye gods - Οἱ αγγελοι αυτου, his angels: so the Septuagint and the apostle: "Let all the angels of God worship him:" and the words are most certainly applied to the Savior of the world by the author of the Epistle to the Hebrews; see the note there. The Chaldee says: "All nations who worship idols shall adore him."