1 Samuel 15:2-3 RSV

2 Thus says the LORD of hosts, 'I will punish what Am'alek did to Israel in opposing them on the way, when they came up out of Egypt.
3 Now go and smite Am'alek, and utterly destroy all that they have; do not spare them, but kill both man and woman, infant and suckling, ox and sheep, camel and ass.'"