The children of Israel passed out of Egypt "harnessed" ( Exodus 13:18 ), i.e., in an orderly manner, and as if to meet a foe. The word so rendered is probably a derivative from Hebrew hamesh (i.e., "five"), and may denote that they went up in five divisions, viz., the van, centre, two wings, and rear-guard.
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Bibliography InformationEaston, Matthew George. "Entry for Harness". "Easton's Bible Dictionary". .