Judith Beheading Holofernes, oil on canvas, 1599-1600
Michelangelo Merisi da Caravaggio
"Approaching to his bed, she took hold of the hair of his head, and said, Strengthen me, O Lord God of Israel, this day! And she smote twice upon his neck with all her might, and she took away his head from him." (Judith, 13:7-8)
Judith seduced Holofernes, got him drunk, and beheaded him. All to save her people.
This is one of my favorite paintings.