Genesis 29:34

29:34 She became pregnant again and had another son. She said, “Now this time my husband will show me affection, because I have given birth to three sons for him.” That is why he was named Levi.

Genesis 34:25

34:25 In three days, when they were still in pain, two of Jacob’s sons, Simeon and Levi, Dinah’s brothers, each took his sword and went to the unsuspecting city and slaughtered every male.