This exercise of divine power in behalf of Israel was designed also to increase the fear with which they were regarded by the surrounding nations, and thus prepare the way for their easier and complete triumph. When the tidings that God had stayed the waters of Jordan before the children of Israel, reached the kings of the Amorites and of the Canaanites, their hearts melted with fear. The Hebrews had already slain the five kings of Midian, the powerful Sihon, king of the Amorites, and Og of Bashan, and now the passage over the swollen and impetuous Jordan filled all the surrounding nations with terror. To the Canaanites, to all Israel, and to Joshua himself, unmistakable evidence had been given that the living God, the King of heaven and earth, was among His people, and that He would not fail them nor forsake them.
Heathen nations had reproached the Lord and His people because the Hebrews had failed to take possession of Canaan, as they expected, soon after leaving Egypt. Their enemies had triumphed because Israel had wandered so long in the wilderness, and they had mockingly declared that the God of the Hebrews was not able to bring them in to the Promised Land. The Lord had now signally manifested His power and favor in opening the Jordan before His people, and their enemies could no longer reproach them. (Patriarchs and Prophets, 485, 486)
Reflection: Their desert wanderings were over; they would now come to possess the land by the power of God. We, like Israel of old, have plenty of evidence that He is real and still as powerful as in those days.