Deuteronomy 9:9

9:9 When I went up the mountain to receive the stone tablets, the tablets of the covenant that the Lord made with you, I remained there forty days and nights, eating and drinking nothing.

Deuteronomy 9:18

9:18 Then I again fell down before the Lord for forty days and nights; I ate and drank nothing because of all the sin you had committed, doing such evil before the Lord as to enrage him.

Deuteronomy 9:1

Theological Justification of the Conquest

9:1 Listen, Israel: Today you are about to cross the Jordan so you can dispossess the nations there, people greater and stronger than you who live in large cities with extremely high fortifications.

Deuteronomy 19:8

19:8 If the Lord your God enlarges your borders as he promised your ancestors and gives you all the land he pledged to them,

Matthew 4:2

4:2 After he fasted forty days and forty nights he was famished.