1 Samuel 15:5 in the King James Version
And Saul came to a city of Amalek, and laid wait in the valley.
Context
4 Saul summoned the people, and counted them in Telaim, two hundred thousand footmen and ten thousand men of Judah.
5 Saul came to the city of Amalek, and set an ambush in the valley.
6 Saul said to the Kenites, “Go, depart, go down from among the Amalekites, lest I destroy you with them; for you showed kindness to all the children of Israel when they came up out of Egypt.” So the Kenites departed from among the Amalekites.