Charles Ellicott Commentary Psalms 50:2

"Out of Zion, the perfection of beauty, God hath shined forth." — Psalms 50:2 (ASV)

Perfection of beauty — that is, Zion, because the Temple, the residence of Jehovah, was there. (Lamentations 2:15; Malachi 2:12.)

Has shined. — Compare to Psalms 80:1; Deuteronomy 33:2. A natural figure of the Divine manifestation, whether taken from the dawn or from lighting.