Cutting
Cutting the flesh was an idolatrous and mourning practice explicitly prohibited in Mosaic law. Deuteronomy 14:1 forbids Israel to cut themselves for the dead, and Leviticus 19:28 prohibits cuttings in the flesh as part of a broader prohibition on practices associated with pagan mourning rites. Leviticus 21:5 extends the prohibition to priests, who were forbidden to make any cuttings in their flesh. These prohibitions set Israel apart from surrounding cultures in which self-laceration was a standard expression of grief or religious ecstasy.
The most dramatic biblical example is the prophets of Baal on Mount Carmel who, when their prayers went unanswered, cut themselves after their manner with knives and lancets, till the blood gushed out upon them (1 Kings 18:28) — a practice Elijah's mockery highlights as characteristic of false religious frenzy. Jeremiah 41:5 records eighty men coming to Jerusalem with their beards shaved, their clothes torn, and their bodies gashed, bringing offerings — a mourning practice after the destruction of the temple. The New Testament prohibition on willful self-harm is grounded in the same theological conviction: the body as God's possession and temple is not to be treated as an expression of pagan grief or religious coercion.