וְעָנ֣וּ הַלְוִיִּ֗ם וְאָֽמְר֛וּ אֶל־כָּל־אִ֥ישׁ יִשְׂרָאֵ֖ל ק֥וֹל רָֽם׃ (ס)
And the Levites shall speak, and say unto all the men of Israel with a loud voice:
Read kabbalistic (mystical) interpretation of Deuteronomy 27:14: and classical mystical sources.