But Saul and the people spared Agag, and the best of the sheep and of the cattle and of the fatlings and the lambs and all that was good, and did not devote them to destruction; but everything that was vile and worthless, that they devoted to destruction. Bible

“devoted to destruction.” In this context, the phrase means “to utterly destroy.” [For more on things “devoted” to Yahweh and devoted to destruction, see commentary on Josh. 6:17].

Commentary for: 1 Samuel 15:9