It happened, when the priests who bore the ark of the covenant of Yahweh were come up out of the midst of the Jordan, and the soles of the priests' feet were lifted up to the dry ground, that the waters of the Jordan returned to their place, and went over all its banks, as before.
The notation that the crossing took place on the tenth day of the first month (Joshua 4:19) is significant. It was exactly 40 years earlier, to the day, that God instructed Israel to prepare to depart from Egypt by setting apart the paschal lambs (Exodus 12:3).