The people of Israel and their elders had demanded that Samuel appoint a king for Israel. God had shown Samuel who his choice was, but now the people need to see it was the Lord who chose Saul. The prophet and judge, Samuel, had not merely made a human choice when he anointed Saul, but was following divine leadership.
Samuel calls the people to meet at Mizpah in a divine assembly. At Mizpah Saul is selected by lot from all the possible rivals who could lay claim to a right to rule. Samuel follows this selection of Saul by lot by stating;
“Do you see the man the Lord has chosen?
There is no one like him among all the people!”
Samuel is verbalizing the divine selection of Saul and stating the fact that no one else could claim that they had been chosen at this solemn assembly. There is, indeed, “no one like” Saul who had been chosen and had a future in God’s plans as the king, ruler, leader and judge of Israel. The people’s only response is to accept the Lord’s choice, so they respond by saying:
“Long live the king!”
This legality of this assembly and the establishment of this kingship were confirmed and documented in written form and placed in the sanctuary (which may have been at the High Place of Gibeah since Shiloh had fallen.) This document would have included the rights and responsibilities of both the king and his subjects. It was the legal documents of the suzerain covenant between these two parties. It is worth noting that literacy is an assumed acquired educational trait that was commonly available in Israel. The creation and spread of the phonetic alphabet by the Phoenicians (Canaanites) around 1200 BC would have made mastery of reading and writing very accessible in Israel at this time (1050 BC)
Interestingly, instead of immediately assuming his role as king and ruler over the twelve tribes, Saul, probably following the model set by the judges, returned to his home, to his farm and to his work on his land. The main difference is that a group of patriots anticipating a conflict for the liberation of Israel from the Philistines accompany Saul back to his home. They stand ready to assist the chosen man of God in his service to his nation. (There is a group of dissenters in 1 Samuel 10:27 and 11:12)