וַיַּעֲמִידֵ֣ם לָעַ֣ד לְעוֹלָ֑ם חָק־נָ֝תַ֗ן וְלֹ֣א יַעֲבֽוֹר׃
He hath also established them for ever and ever; He hath made a decree which shall not be transgressed.
Read kabbalistic (mystical) interpretation of Psalms 148:6: and classical mystical sources.