Deuteronomy 29:5

29:5 I have led you through the desert for forty years. Your clothing has not worn out nor have your sandals deteriorated.

Deuteronomy 31:10

31:10 He commanded them: “At the end of seven years, at the appointed time of the cancellation of debts, at the Feast of Temporary Shelters,

Deuteronomy 32:7

32:7 Remember the ancient days;

bear in mind the years of past generations.

Ask your father and he will inform you,

your elders, and they will tell you.