1 Samuel 8:7

3 But his sons did not walk in his ways; they turned aside toward dishonest gain, accepting bribes and perverting justice.

4 So all the elders of Israel gathered together and came to Samuel at Ramah.

5 “Look,” they said, “you are old, and your sons do not walk in your ways. Now appoint a king to judge us like all the other nations.”

6 But when they said, “Give us a king to judge us,” their demand was displeasing in the sight of Samuel; so he prayed to the LORD.

7 And the LORD said to Samuel, “Listen to the voice of the people in all that they say to you. For it is not you they have rejected, but they have rejected Me as their king.

8 Just as they have done from the day I brought them up out of Egypt until this day, forsaking Me and serving other gods, so they are doing to you.

9 Now listen to them, but you must solemnly warn them and show them the manner of the king who will reign over them.”

10 So Samuel spoke all the words of the LORD to the people who were asking him for a king.

11 He said, “This will be the manner of the king who will reign over you: He will take your sons and appoint them to his own chariots and horses, to run in front of his chariots.

Read all of 1 Samuel 8