Verses 1–6
Joshua - Chapter 3
Preparing to Cross Jordan, vs. 1-6
The Israelite camp at Shittim was opposite the city of Jericho, on the east side of the Jordan River. They had been camped here since they had successfully defeated the Amorite kings (Numbers 25:1), and it was in the camp here that Moses gave the farewell addresses before his death recorded in the Book of Deuteronomy.
It is probable that Joshua moved the camp nearer to the river crossing, as shown in verse 1, while awaiting the report of the spies he had sent to Jericho. This is suggested by the fact that just three days later (the spies were gone three days), the officers were sent through the camp to advise the people that they were to be ready to decamp and follow the ark of the covenant when they saw the priest and Levites depart with it to go before them.
The ark was a holy vessel of the tabernacle, to be borne only by the Kohathite family of the Levites after the son of the high priest had covered it with the veil (Numbers 4:17-20).
It was to precede the people in battle and such campaigns as they were about to undertake (Numbers 10:33). The distance prescribed between the people and the ark would separate the people as profane from the ark, the holy symbol of God’s presence, borne by men sanctified to the Lord’s purpose. There was also another reason; this was a new way by which they had not previously gone.
A thousand yards behind, the people could see the priests bearing the ark down the slope to the river crossing, the symbol of the Lord’s leadership to give them confidence for the battles to come.
Joshua said to the people, "Sanctify yourselves: for tomorrow the Lord will do wonders among you."
They were to go through ceremonial cleansing to prepare themselves for a manifestation of the Lord’s greatness to come the next day.
Here is a strong witness for God’s children today, to keep themselves clean from the world and its evil that in the days ahead the Lord may do wonders among them. This done the Israelites (and Christians by analogy) are ready to set forth on the journey, (1 Peter 3:15).