Deuteronomy 11:15

12 A land cared for by the Lord your God: the eyes of the Lord your God are on it at all times from one end of the year to the other.

13 And it will be that if you truly give ear to the orders which I put before you this day, loving the Lord your God and worshipping him with all your heart and all your soul,

14 Then I will send rain on your land at the right time, the early rains and the late rains, so that you may get in your grain and your wine and your oil.

15 And I will give grass in your fields for your cattle, so that you may have food in full measure.

16 But take care that your hearts are not turned to false ways so that you become servants and worshippers of other gods;

17 For if you do so, the wrath of the Lord will be burning against you, and the heaven will be shut up so that there is no rain and the land will give no fruit; and in a very little time you will be cut off from the good land which the Lord is giving you.

18 So keep these words deep in your heart and in your soul, and have them fixed on your hand for a sign and marked on your brow;