Acts 13:18

For a period of about forty years, He fed them, like a nurse, in the Desert.

Acts 7:36

This was he who brought them out, after performing marvels and signs in Egypt and at the Red Sea, and in the Desert for forty years.

Acts 7:39-43

"Our forefathers, however, would not submit to him, but spurned his authority and in their hearts turned back to Egypt.

1 Corinthians 10:1-10

For I would have you remember, brethren, how our forefathers were all of them sheltered by the cloud, and all got safely through the Red Sea.

Hebrews 3:7-10

For this reason--as the Holy Spirit warns us, "To-day, if you hear His voice,

Hebrews 3:16-19

For who were they that heard, and yet provoked God? Was it not the whole of the people who had come out of Egypt under the leadership 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 was he who brought them out, after performing marvels and signs in Egypt and at the Red Sea, and in the Desert for forty years.
1 Corinthians 10:1
For I would have you remember, brethren, how our forefathers were all of them sheltered by the cloud, and all got safely through the Red Sea.
Hebrews 3:7
For this reason--as the Holy Spirit warns us, "To-day, if you hear His voice,