Numbers 13:25

And they turn back from spying the land at the end of forty days.

Exodus 24:18

and Moses goeth into the midst of the cloud, and goeth up unto the mount, and Moses is on the mount forty days and forty nights.

Exodus 34:28

And he is there with Jehovah forty days and forty nights; bread he hath not eaten, and water he hath not drunk; and he writeth on the tables the matters of the covenant -- the ten matters.

Numbers 14:33-34

and your sons are evil in the wilderness forty years, and have borne your whoredoms till your carcases are consumed in the wilderness;

Treasury of Scripture Knowledge

Summary

And they returned from searching of the land after forty days.

Bible References

Forty days

Numbers 14:33
and your sons are evil in the wilderness forty years, and have borne your whoredoms till your carcases are consumed in the wilderness;
Exodus 24:18
and Moses goeth into the midst of the cloud, and goeth up unto the mount, and Moses is on the mount forty days and forty nights.
Exodus 34:28
And he is there with Jehovah forty days and forty nights; bread he hath not eaten, and water he hath not drunk; and he writeth on the tables the matters of the covenant -- the ten matters.