The Lord made you a people for himself

For the Lord will not give his people up, because of the honour of his name; for it was the Lord’s pleasure to make of you a people for himself.
1 Samuel 12:22

And as for me, never will I go against the orders of the Lord by giving up my prayers for you: but I will go on teaching you the good and right way.
1 Samuel 12:23

Only go in the fear of the Lord, and be his true servants with all your heart, keeping in mind what great things he has done for you.
1 Samuel 12:24

But if you still do evil, destruction will overtake you and your king.
1 Samuel 12:25

Do not make agreements with the enemy

Then about a month after this, Nahash the Ammonite came up and put his forces in position for attacking Jabesh-gilead: and all the men of Jabesh said to Nahash, Make an agreement with us and we will be your servants. And Nahash the Ammonite said to them, I will make an agreement with you on this condition, that all your right eyes are put out; so that I may make it a cause of shame to all Israel.
1 Samuel 11:1-2

And at their words, the spirit of God came on Saul with power, and he became very angry.
1 Samuel 11:6

Saints that make compromises with the world are blind in one eye, unfit to fight the enemy.

God anoints the ruler over his people

Then Samuel took the bottle of oil, and put the oil on his head and gave him a kiss and said, Is not the Lord with the holy oil making you ruler over Israel, his people? and you will have authority over the people of the Lord, and you will make them safe from the hands of their attackers round about them, and this will be the sign for you:
1 Samuel 10:1