The miraculous parting of the Jordan was only the beginning of a series of miracles that demonstrated to the Israelites that their God was indeed among them. He was active for them and working through Joshua to give them victory ( Joshua 3:7). [source][source][source]
This event bore many similarities to the crossing of the Red Sea ( Joshua 3:13; cf. Exodus 14). In contrast, Moses had divided the waters of the Red Sea with his rod. Joshua divided the waters of the Jordan with the ark that had become the divinely appointed symbol of God"s presence since God gave the Mosaic Covenant ( Joshua 3:8). [source][source][source]
Evidently the pushing back of the waters of the Jordan was to be a sign to the Israelites that God would push back the Canaanites ( Joshua 3:10). The title "the Lord of all the earth" occurs here ( Joshua 3:11) first in Scripture indicating Yahweh"s absolute sovereignty over this planet. Because He was "the Lord of all the earth" He could give Canaan to the Israelites. [source][source][source]