# It grieves me

"I am sorry"

# he has turned back from following me

Saul not obeying Yahweh is spoken of as if Saul had physically turned away from walking behind God. Alternate translation: "he has stopped following me" (See: [[rc://en/ta/man/translate/figs-metaphor]])

# has not performed my commandments

"has not obeyed what I commanded him to do." Saul was to completely destroy everything and everyone. God had placed a ban on the Amalekites. But Saul permitted some livestock to live.

# Samuel was angry

Possible meanings are 1) Samuel was angry with Saul for his disobedience or 2) Samuel was disturbed.