Genesis 49:6
KJV
O my soul, come not thou into their secret; unto their assembly, mine honour, be not thou united: for in their anger they slew a man, and in their selfwill they digged down a wall.
NIV
Let me not enter their council, let me not join their assembly, for they have killed men in their anger and hamstrung oxen as they pleased.
In context, Jacob is reprimanding Simeon and Levi for the massacre at Shechem (Gen. 34:25-31), where they took the sheep, oxen, asses, etc. as spoil. It nowhere indicates they killed the oxen for sport. In archaeology, Shechem is renowned for its massive, fortified walls in antiquity. Thus, it makes sense that Jacob emphasizes the amount of effort they exerted in their selfwill to dig down one of its walls.
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