'Killing' in the Bible

Then he cried out to the Lord and said, “My Lord God, have You also brought tragedy on the widow I am staying with by killing her son?”

When Jezebel was killing the Lord's prophets, Obadiah took one hundred prophets and hid them in two caves in two groups of fifty. He also brought them food and water.)

Hasn't anyone told you, my master, what I did when Jezebel was killing the LORD's prophets? I hid 100 of the LORD's prophets by fifties in a cave and provided food and water for them.

Ahab complained to Jezebel about everything that Elijah had done, especially the part about him killing all the prophets of Baal with a sword.