Hebrews 3:17

Were they not all that came out of Egypt by Moses? And with whom was he grieved forty years? Was it not with them who had sinned?

Acts 7:36

He brought them out, doing wonders and signs, in the land of Egypt, and in the Red Sea, and in the wilderness forty years.

John 3:19-21

And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.

Acts 13:18

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

Romans 1:28

And as they were not careful to retain God in their knowledge, God gave them up to an undiscerning mind, to do things not expedient, Filled with all injustice, maliciousness, covetousness, wickedness:

Ephesians 4:30

And grieve not the Holy Spirit of God, whereby ye are sealed unto the day of redemption.

Hebrews 3:9-10

Where your fathers tempted me, proved me, and saw my works forty years.

Treasury of Scripture Knowledge

Summary

Forty years long was I grieved with this generation, and said, It is a people that do err in their heart, and they have not known my ways:

Forty

Bible References

Forty

Hebrews 3:9
Where your fathers tempted me, proved me, and saw my works forty years.

And they

John 3:19
And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.
Romans 1:28
And as they were not careful to retain God in their knowledge, God gave them up to an undiscerning mind, to do things not expedient, Filled with all injustice, maliciousness, covetousness, wickedness: