25 And they returned from exploring the land after forty days.
Numbers 13:25 Cross References - Webster
Exodus 24:18
18 And Moses went into the midst of the cloud, and ascended the mount: and Moses was on the mount forty days and forty nights.
Exodus 34:28
28 And he was there with the LORD forty days and forty nights; he neither ate bread nor drank water: and he wrote upon the tables the words of the covenant, the ten commandments.
Numbers 14:33-34
33 And your children shall wander in the wilderness forty years, and bear your lewd deeds, until your carcasses shall be wasted in the wilderness.
34 After the number of the days in which ye searched the land, even forty days (each day for a year) shall ye bear your iniquities, even forty years, and ye shall know my breach of promise.