Idol worshippers cut themselves in 1 Kings 18:
A demonized man cut himself in Mark 5:28 So they shouted louder and slashed themselves with swords and spears, as was their custom, until their blood flowed.
Acts 16:5 Night and day among the tombs and on the mountains he was always crying out and cutting himself with stones.
Self-harming does not glorify God.28 But Paul cried with a loud voice, “Do not harm yourself, for we are all here.”