"After three days the officers went throughout the camp, giving orders to the people: 'When you see the ark of the covenant of the Lord your God, and the Levitical priests carrying it, you are to move out from your positions and follow it. Then you will know which way to go, since you have never been this way before. But keep a distance of about two thousand cubits between you and the ark; do not go near it.'" NIV translation
We see that the leaders waited for three days and then informed the people of what they should do. We are reminded that the number three is associated with the earthly display of God's will and the leaders had waited for that to be revealed. Like Israel, once we are in the appointed position, God will show us His desire for our walk. The ark of the covenant was the most sacred of the tabernacle furnishings as it was a picture of the throne of our Lord. The ark was going to be carried by the appointed people ahead of the rest of the Israelites which is a reminder that the Lord goes before us in our walk. We also notice that only those that were appointed for the task were to be near the ark and this reminds us of the fact that the works that God has prepared for each of us is unique. Just as the rest of the Israelites were not to touch the ark, we cannot do the work that God has prepared for someone else. To walk in power, we must be walking in the proper direction and the only way to do so is to let Him lead the way.