וְהִנַּחְתָּ֖ם בְּאֹ֣הֶל מוֹעֵ֑ד לִפְנֵי֙ הָֽעֵד֔וּת אֲשֶׁ֛ר אִוָּעֵ֥ד לָכֶ֖ם שָֽׁמָּה׃
And thou shalt lay them up in the tent of meeting before the testimony, where I meet with you.
Read kabbalistic (mystical) interpretation of Numbers 17:19: and classical mystical sources.