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HarnessEASTON'S
(1.) Heb. ‘asar, “to bind;” hence the act of fastening animals to a cart (1 Sam. 6:7, 10; Jer. 46:4, etc.). (2.) An Old English word for “armour;” Heb. neshek (2 Chr. 9:24). (3.) Heb. shiryan, a coat of mail (1 Kings 22:34; 2 Chr. 18:33; rendered “breastplate” in Isa. 59:17). (4.) The children of Israel passed out of Egypt “harnessed” (Ex. 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.
Easton's Illustrated Bible Dictionary, 3rd ed. (1897), public domain.