en_tn_condensed/1sa/15/09.md

Saul ... spared Agag

Samuel told Saul that God wanted him to completely destroy the Amalekite people and animals. Saul fought the Amalekites and killed all the people except the king. He destroyed the animals that were not very good but saved the best animals. Saul told Samuel he had obeyed God's command and had saved them for a sacrifice to God. Because Saul had disobeyed, God had chosen someone else to become king.

as well as the best of the sheep

Saul disobeyed God by keeping the best of the livestock.