14 So the people left their camp to cross the Jordan, and the priests who were carrying the Ark of the Covenant went ahead of them. 15 It was the harvest season, and the Jordan was overflowing its banks. But as soon as the feet of the priests who were carrying the Ark touched the water at the river's edge, 16 the water above that point began backing up a great distance away at a town called Adam, which is near Zarethan. And the water below that point flowed on to the Dead Sea until the riverbed was dry. Then all the people crossed over near the town of Jericho. 17 Meanwhile, the priests who were carrying the Ark of the Lord 's Covenant stood on dry ground in the middle of the riverbed as the people passed by. They waited there until the whole nation of Israel had crossed the Jordan on dry ground.

Matthew Henry's Commentary on Joshua 3:14-17

Commentary on Joshua 3:14-17

(Read Joshua 3:14-17)

Jordan overflowed all its banks. This magnified the power of God, and his kindness to Israel. Although those who oppose the salvation of God's people have all advantages, yet God can and will conquer. This passage over Jordan, as an entrance to Canaan, after their long, weary wanderings in the wilderness, shadowed out the believer's passage through death to heaven, after he has finished his wanderings in this sinful world. Jesus, typified by the ark, hath gone before, and he crossed the river when it most flooded the country around. Let us treasure up experiences of His faithful and tender care, that they may help our faith and hope in the last conflict.