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Hebrew: malmad, only in Judg. 3: 31
an instrument used by ploughman for guiding their oxen
Shamgar slew six hundred Philistines with an ox-goad. “The goad is a formidable weapon. It is sometimes ten feet long, and has a sharp point. We could now see that the feat of Shamgar was not so very wonderful as some have been accustomed to think.”
In 1 Samuel 13:21, a different Hebrew word is used, dorban, meaning something pointed. The expression (Acts 9:5, omitted in the Revised King James Version), “It is hard for thee to kick against the pricks”, i.e., against the goad, was proverbial for unavailing resistance to superior power.