"He stood between the living and the dead until the plague was stopped." Numbers 16:48 (NLT)When the ancient Israelites rebelled against Moses, God struck them with a plague. As death spread across the camp, Aaron filled his incense burner and ran to stand between those who were dying and those who had not yet been infected. 14,700 people died that day. Myriads more were saved because of Aaron's and Moses' actions.
There is a word for standing between the living and the dead: ministry.