Albert Barnes Commentary Psalms 78:69

"And he built his sanctuary like the heights, Like the earth which he hath established for ever." — Psalms 78:69 (ASV)

And he built his sanctuary - His holy place; that is, his tabernacle. The temple was not then built; and, when reared, it was not on Mount Zion, but on Mount Moriah. The name Zion, however, was often given to the whole city.

Like high palaces - The word palaces is not in the original. The Hebrew means simply high places, like hills or mountains. The meaning is, that his sanctuary was exalted, as if it were placed on a high hill. It was a conspicuous object; it could be seen from afar; it was the most prominent thing in the land. See the notes at (Isaiah 2:2).

Like the earth - Permanent and established.

Which he has established for ever - Margin, as in Hebrew, founded. The earth is often represented as founded or established on a solid basis, and thus becomes an emblem of stability and perpetuity.