Now therefore, heed their voice. However, you shall solemnly forewarn them, and show them the behavior of the king who will reign over them."
1 Samuel 8:9
Surrounding context
8:8 According to all the works which they have done since the day that I brought them up out of Egypt, even to this day--with which they have forsaken Me and served other gods--so they are doing to you also.
8:9 Now therefore, heed their voice. However, you shall solemnly forewarn them, and show them the behavior of the king who will reign over them."
8:10 So Samuel told all the words of the LORD to the people who asked him for a king.