Joshua 4:11
And it came to pass, when all the people were clean passed over, that the ark of the LORD passed over, and the priests, in the presence of the people. And it came to pass, when all the people were clean passed over, that the ark of the LORD passed over, and the priests, in the presence of the people.
When all the people had finished passing clean over the Jordan, the ark of the Lord and the priests passed over afterward in full sight and presence of the people. The priests had remained standing with the ark in the riverbed while the people passed over. Christ, accompanied by heavenly angels, went before the ark and stood with the priests in the riverbed until the people had passed over. The ark's crossing marked the completion of the passage and displayed God's power. The preparation for and passage over the Jordan teaches lessons to be kept fresh in memory as a deliverance for future generations, so that God's Word remains interesting and impressive.