1 Samuel 12:16-18

Amplified Bible

¹⁶ So now, take your stand and see this great thing which the Lord will do before your eyes. ¹⁷ Is it not [the beginning of the] wheat harvest today? I will call to the Lord and He will send thunder and rain; then you will know [without any doubt], and see that your evil which you have done is great in the sight of the Lord by asking for yourselves a king.” ¹⁸ So Samuel called to the Lord [in prayer], and He sent thunder and rain that day; and all the people greatly feared the Lord and Samuel.