And let there be, between you and the ark, the space of two thousand cubits, so that you may be able to see it from far away, and to know along which way you should advance. For you have not walked this way before. And be careful that you do not approach the ark.
Other versions
King James Version
Yet there shall be a space between you and it, about two thousand cubits by measure: come not near unto it, that ye may know the way by which ye must go: for ye have not passed this way heretofore. English Standard Version
Yet there shall be a distance between you and it, about 2,000 cubits in length. Do not come near it, in order that you may know the way you shall go, for you have not passed this way before."New International Version
Then you will know which way to go, since you have never been this way before. But keep a distance of about a thousand yards between you and the ark; do not go near it."