And Samuel said to Saul, You have done foolishly: you have not kept the commandment of the LORD your God, which he commanded you: for now would the LORD have established your kingdom upon Israel forever.
Read Chapter 13
George Leo Haydock
Ever. He foresaw this want of obedience, and therefore promised the sceptre to Juda, Genesis xlix. (Menochius)
God's foresight of sin, and preordination to punish it, does not take away free-will nor the possibility of a reward. (St. Augustine) (Worthington)