Acts 13:18

And for about the time of forty years He bore them as a nursing father in the wilderness.

Acts 7:36

This man led them out, having wrought wonders and signs in Egypt, and in the Red sea, and in the wilderness forty years.

Acts 7:39-43

to whom our fathers wished not to become obedient, but thrust him away, and in their hearts turned back again to Egypt;

1 Corinthians 10:1-10

For I do not wish you to be ignorant, brethren, that our fathers were all under the cloud, and all passed through the sea;

Hebrews 3:7-10

Wherefore, as the Holy Spirit saith, "To-day, if ye hear His voice,

Hebrews 3:16-19

For who, after having heard, did provoke? nay, did not all who came out of Egypt through 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 man led them out, having wrought wonders and signs in Egypt, and in the Red sea, and in the wilderness forty years.
1 Corinthians 10:1
For I do not wish you to be ignorant, brethren, that our fathers were all under the cloud, and all passed through the sea;
Hebrews 3:7
Wherefore, as the Holy Spirit saith, "To-day, if ye hear His voice,