Acts 13:18

and for about forty years he nourished them in the wilderness.

Acts 7:36

This very man brought them out, working wonders and signs in the land of Egypt, and in the Red Sea, and in the wilderness forty years.

Acts 7:39-43

to whom our fathers would not be obedient, but thrust him from them, and in their hearts turned back into Egypt,

1 Corinthians 10:1-10

For I would not have you ignorant, brethren, that all our fathers were under the cloud, and all passed through the sea,

Hebrews 3:7-10

Wherefore, as the Holy Spirit saith: "Today, if ye hear his voice,

Hebrews 3:16-19

who then, when they had heard, provoked? Was it not all who came out of Egypt by means of Moses?

Treasury of Scripture Knowledge

Summary

And about the time of forty years suffered he their manners in the wilderness.

Bible References

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Acts 7:36
This very man brought them out, working wonders and signs in the land of Egypt, and in the Red Sea, and in the wilderness forty years.
1 Corinthians 10:1
For I would not have you ignorant, brethren, that all our fathers were under the cloud, and all passed through the sea,
Hebrews 3:7
Wherefore, as the Holy Spirit saith: "Today, if ye hear his voice,