וְרָאָ֤ה כָל־הָעָם֙ אֶת־עַמּ֣וּד הֶֽעָנָ֔ן עֹמֵ֖ד פֶּ֣תַח הָאֹ֑הֶל וְקָ֤ם כָּל־הָעָם֙ וְהִֽשְׁתַּחֲוּ֔וּ אִ֖ישׁ פֶּ֥תַח אָהֳלֽוֹ׃
And when all the people saw the pillar of cloud stand at the door of the Tent, all the people rose up and worshipped, every man at his tent door.
Read kabbalistic (mystical) interpretation of Exodus 33:10: and classical mystical sources.