וּבְהַאֲרִ֧יךְ הֶֽעָנָ֛ן עַל־הַמִּשְׁכָּ֖ן יָמִ֣ים רַבִּ֑ים וְשָׁמְר֧וּ בְנֵי־יִשְׂרָאֵ֛ל אֶת־מִשְׁמֶ֥רֶת יְהוָ֖ה וְלֹ֥א יִסָּֽעוּ׃
And when the cloud tarried upon the tabernacle many days, then the children of Israel kept the charge of the LORD, and journeyed not.
Read Kabbalistic (mystical) interpretations of Numbers 9:19: Zohar and classical Jewish mystical sources, free online.