but if you will not listen to the voice of Yahweh, but rebel against the commandment of Yahweh, then will the hand of Yahweh be against you, as it was against your fathers.
God confirmed the truth of Samuel’s words supernaturally when He sent rain during the wheat harvest, normally the driest period of the year. The rain symbolized the blessing of God for obedience (cf. Deuteronomy 28:12). This storm was a sign that Yahweh was supporting Samuel. However, coming at this time of the year, it proved to be judgmental, since farmers do not appreciate rain during harvests, and a warning of future potential judgment.