The Hebrew grammatical construction translated "the king whom you have chosen, whom you have asked for"(v. 13) shows that the people had not just requested a king but demanded him out of strong self-will. The key to Israel's future blessing would be her fearing Yahweh, serving Him, listening to His voice through the Mosaic Law and the prophets, and not rebelling against His commands (v. 14). The major message of the Books of Samuel thus comes through again clearly in Samuel's final words to the nation, as we would expect. For the Israelites, obedience to the Mosaic Covenant would result in fertility of all kinds (cf. Deut. 28:1-14).
God confirmed the truth of Samuel's words supernaturally when He sent rain during the wheat harvest, the driest period of the year. The rain symbolized the blessing of God for obedience (cf. Deut. 28:12). This storm was a sign that Yahweh was supporting Samuel.
