Psalm 95:10

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

Hebrews 3:17

And with whom was he wroth forty years? Was it not with those who had sinned, whose carcases fell in the wilderness?

Acts 7:36

He led them out, having wrought wonders and signs in the land of Egypt, and in the Red sea, and in the wilderness forty years.

Genesis 6:6

And Jehovah repented that he had made Man on the earth, and it grieved him in his heart.

Numbers 14:33-34

And your children shall wander in the wilderness forty years, and bear your whoredoms, until your carcases be wasted in the wilderness.

Numbers 32:13

And Jehovah's anger was kindled against Israel, and he made them wander in the wilderness forty years, until the whole generation was consumed that had done evil in the eyes of Jehovah.

Deuteronomy 1:3

And it came to pass in the fortieth year, in the eleventh month, on the first of the month, that Moses spoke to the children of Israel, according to all that Jehovah had given him in command to them;

Deuteronomy 2:14-16

Now the days in which we came from Kadesh-barnea, until we had come over the torrent Zered, were thirty-eight years; until the whole generation of the men of war was consumed from the midst of the camp, as Jehovah had sworn unto them.

Proverbs 1:7

The fear of Jehovah is the beginning of knowledge: fools despise wisdom and instruction.

Proverbs 1:22-29

How long, simple ones, will ye love simpleness, and scorners take pleasure in their scorning, and the foolish hate knowledge?

Isaiah 63:17

Why, O Jehovah, hast thou made us to err from thy ways, hast hardened our heart from thy fear? Return for thy servants' sake, the tribes of thine inheritance.

Jeremiah 9:6

Thy habitation is in the midst of deceit; through deceit they refuse to know me, saith Jehovah.

John 3:19-21

And this is the judgment, that light is come into the world, and men have loved darkness rather than light; for their works were evil.

Acts 13:18

and for a time of about forty years he nursed them in the desert.

Romans 1:28

And according as they did not think good to have God in their knowledge, God gave them up to a reprobate mind to practise unseemly things;

Ephesians 4:30

And do not grieve the Holy Spirit of God, with which ye have been sealed for the day of redemption.

Hebrews 3:9-10

where your fathers tempted me, by proving 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:

General references

Bible References

Forty

Numbers 14:33
And your children shall wander in the wilderness forty years, and bear your whoredoms, until your carcases be wasted in the wilderness.
Numbers 32:13
And Jehovah's anger was kindled against Israel, and he made them wander in the wilderness forty years, until the whole generation was consumed that had done evil in the eyes of Jehovah.
Deuteronomy 1:3
And it came to pass in the fortieth year, in the eleventh month, on the first of the month, that Moses spoke to the children of Israel, according to all that Jehovah had given him in command to them;
Deuteronomy 2:14
Now the days in which we came from Kadesh-barnea, until we had come over the torrent Zered, were thirty-eight years; until the whole generation of the men of war was consumed from the midst of the camp, as Jehovah had sworn unto them.
Hebrews 3:9
where your fathers tempted me, by proving me, and saw my works forty years.

And they

Proverbs 1:7
The fear of Jehovah is the beginning of knowledge: fools despise wisdom and instruction.
Jeremiah 9:6
Thy habitation is in the midst of deceit; through deceit they refuse to know me, saith Jehovah.
John 3:19
And this is the judgment, that light is come into the world, and men have loved darkness rather than light; for their works were evil.
Romans 1:28
And according as they did not think good to have God in their knowledge, God gave them up to a reprobate mind to practise unseemly things;

General references

Psalm 78:17
Yet they still went on sinning against him, provoking the Most High in the desert;