Psalms 78:69 Kabbalah

וַיִּ֣בֶן כְּמוֹ־רָ֭מִים מִקְדָּשׁ֑וֹ כְּ֝אֶ֗רֶץ יְסָדָ֥הּ לְעוֹלָֽם׃

And He built His sanctuary like the heights, Like the earth which He hath founded for ever.

Read kabbalistic (mystical) interpretation of Psalms 78:69: and classical mystical sources.