Joshua 4:16-18 NIV

16 "Command the priests carrying the ark of the Testimony1 to come up out of the Jordan."

References for Joshua 4:16

17 So Joshua commanded the priests, "Come up out of the Jordan."
18 And the priests came up out of the river carrying the ark of the covenant of the LORD. No sooner had they set their feet on the dry ground than the waters of the Jordan returned to their place2 and ran at flood stage3 as before.

References for Joshua 4:18