Charles Ellicott Commentary Psalms 106:20

"Thus they changed their glory For the likeness of an ox that eateth grass." — Psalms 106:20 (ASV)

Their glory — i.e., Jehovah, as shown by Jeremiah 2:11.

Similitude. — This is also a Deuteronomic word (Deuteronomy 4:16; Deuteronomy 4:18), meaning originally “structure,” from a root meaning “to build,” and so “form,” “model.”