What does 1 Samuel 22:18 mean?

So Saul told Doeg, 'You do it.' Doeg the Edomite turned and killed the priests—eighty-five men who wore the linen priestly vest. 1 Samuel 22:18 - Modern Text Bible

(Doeg, not being an Israelite, has no qualms about killing the priests, and he carries out Saul’s brutal command.)