What does Joshua 4:18 mean?

And it came to pass, when the priests that bare the ark of the covenant of Jehovah were come up out of the midst of the Jordan, and the soles of the priests’ feet were lifted up unto the dry ground, that the waters of the Jordan returned unto their place, and went over all its banks, as aforetime.

And it came to pass, when the priests that bare the ark of the covenant of the Lord were come up out of the midst of Jordan, and the soles of the priests’ feet were lifted up unto the dry land, that the waters of Jordan returned unto their place, and flowed over all his banks, as they did before.

And it came to pass, when the priests that bare the ark of the covenant of Jehovah were come up out of the midst of the Jordan, and the soles of the priests’ feet were lifted up unto the dry ground, that the waters of the Jordan returned unto their place, and went over all its banks, as aforetime.

And when the priests who took up the ark of the Lord's agreement came up out of Jordan and their feet came out on to dry land, the waters of Jordan went back to their place, overflowing its edges as before.

And it cometh to pass, in the coming up of the priests bearing the ark of the covenant of Jehovah out of the midst of the Jordan--the soles of the feet of the priests have been drawn up into the dry ground--and the waters of the Jordan turn back to their place, and go as heretofore over all its banks.

And when they that carried the ark of the covenant of the Lord, were come up, and began to tread on the dry ground, the waters returned into their channel, and ran as they were wont before.

And it came to pass when the priests who bore the ark of the covenant of Jehovah had come up out of the midst of the Jordan, [when] the soles of the priests' feet were lifted up on to the dry land, that the waters of the Jordan returned to their place, and they flowed as previously, over all its banks.