The meaning of Horse in the Bible
(From Easton's Bible Dictionary)

always referred to in the Bible in connection with warlike operations, except Isaiah 28:28. The war-horse is described Job 39:19-25. For a long period after their settlement in Canaan the Israelites made no use of horses, according to the prohibition, Deuteronomy 17:16. David was the first to form a force of cavalry (II Samuel 8:4). But Solomon, from his connection with Egypt, greatly multiplied their number (I Kings 4:26; 10:26,29). After this, horses were freely used in Israel (I Kings 22:4; 2Kings 3:7; 9:21,33; 11:16). The furniture of the horse consisted simply of a bridle (Isaiah 30:28) and a curb (Psalms 32:9).

See more on the meaning of Horse in the Bible:
Horse {International Standard Bible Encyclopedia}

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