Yehoshua 3:2-4

Orthodox Jewish Bible

² And it came to pass after shloshet yamim, that the Shoterim went through the Machaneh;

³ And they commanded HaAm, saying, When ye see the Aron Brit Hashem Eloheichem, and the Kohanim who are Levi’im bearing it, then ye shall move out from your makom, and follow after it.

⁴ Yet there shall be a rachok (distance, space) between you and it, about two thousand cubits by measure; come not near unto it, that ye have da’as of the Derech by which ye must go; for ye have not passed this way heretofore.