Charles Ellicott Commentary Psalms 96:6

"Honor and majesty are before him: Strength and beauty are in his sanctuary." — Psalms 96:6 (ASV)

Honour ... The whole universe displays Jehovah’s majesty, but primarily his sanctuary in Israel, where it is symbolized by the magnificent splendor of the building and its rituals. So the version of Apollinaris, “Pureness and stately glory fit his shrine.” The chronicler, having adopted this psalm as suitable for the occasion when the ark was brought to Zion by David, has substituted strength and gladness are in his place possibly because the Temple was not built at that time.