Mark 5:5

And always, night and day, he was in the mountains, and in the tombs, crying, and cutting himself with stones.

Cross-reference

Luke 9:39 Parallel

Luke 9:39 describes a demon-possessed boy crying out and convulsing. Both feature a demoniac crying out and suffering physical harm.

In Leviticus 19:28, cutting the body is forbidden—the demoniac's self-cutting directly violates this command.

In 1 Kings 18:28, Baal prophets cut themselves—a similar act of self-harm to the demoniac's cutting with stones.

Matthew 17:15 shows a demon-possessed boy falling into fire and water. Both involve self-destructive behavior caused by demons.