26 But Samuel said to him, “I will not go back with you. You have rejected the word of the LORD, and the LORD has rejected you as king over Israel!”

Read 1 Samuel 15:26 Using Other Translations

And Samuel said unto Saul, I will not return with thee: for thou hast rejected the word of the LORD, and the LORD hath rejected thee from being king over Israel.
And Samuel said to Saul, "I will not return with you. For you have rejected the word of the LORD, and the LORD has rejected you from being king over Israel."
But Samuel replied, “I will not go back with you! Since you have rejected the LORD ’s command, he has rejected you as king of Israel.”