After the Israelites finished crossing the Jordan River, the priests carrying the Ark remained standing in the dry riverbed. Although the broader narrative already established that the Ark successfully crossed, the account steps back to detail exactly how this final ascent from the water took place [רד״ק, ביאור שטיינזלץ].
With the entire nation safely on the other side and the primary mission complete, a natural question arises as to why a special divine command was necessary for the priests to finally exit the river. One perspective explains that this was a matter of strict obedience. God's original instruction required the priests to stand firmly within the Jordan, meaning they had no permission to leave on their own initiative. Furthermore, even Joshua lacked the authority to order them out without an explicit directive from God to override the initial command [אברבנאל].
Beyond the duty of obedience, this deliberate delay served to magnify the miracle before the eyes of the entire nation. If the priests had stepped out of the riverbed of their own accord, onlookers might have argued that they did so out of fear, fleeing because they saw the towering wall of water beginning to collapse. By waiting specifically for God's command, they proved that the waters did not resume their natural flow until the priests' feet had completely left the riverbed. This intentional pause made the supernatural nature of the event undeniable and clear [אלשיך, אברבנאל].
The delivery of this command also served to highlight the elevated status of the nation's new leader. God instructed Joshua to pass the order to the priests, and Joshua did so with absolute authority. Rather than prefacing his words by stating that God had spoken, he issued the command directly. This confident display of leadership fulfilled the earlier promise that God would elevate Joshua in the eyes of the people, firmly establishing his strength and authority [אלשיך].