וְלֹא־יִקְרְב֥וּ ע֛וֹד בְּנֵ֥י יִשְׂרָאֵ֖ל אֶל־אֹ֣הֶל מוֹעֵ֑ד לָשֵׂ֥את חֵ֖טְא לָמֽוּת׃
And henceforth the children of Israel shall not come nigh the tent of meeting, lest they bear sin, and die.
Read kabbalistic (mystical) interpretation of Numbers 18:22: and classical mystical sources.