When the soles of the feet of the priests who carry the ark of the LORD, the Lord of the whole earth, touch the water in the Jordan River, the water that feeds the Jordan will be cut off from above and they'll stand still in a single location."

the water flowing downstream from above stood still in a single location, a great distance away at Adam, a city near Zarethan. The water that flowed south toward the sea in the Arabah (that is, the Dead Sea) was completely cut off. So the people crossed opposite Jericho.