Ecclesiastes 7:10

Do not say, Why was it that the former days were better than these? For you do not ask wisely in regard to this.

Genesis 6:11-12

The earth also was corrupt before God, and the earth was filled with violence.

Judges 6:13

And Gideon said to Him, O, my Lord, if Jehovah is with us, why then has all this happened to us? And where are all His miracles which our fathers told us of, saying, Did not Jehovah bring us up from Egypt? But now Jehovah has forsaken us, and delivered us into the hands of the Midianites.

Psalm 14:2-3

Jehovah looked down from Heaven on the sons of men, to see if there were any who understood and sought God.

Isaiah 50:1

So says Jehovah, Where is your mother's bill of divorce, whom I have put away? Or to which of My creditors have I sold you? Behold, you were sold for your iniquities, and your mother is put away for your sins.

Jeremiah 44:17-19

But we will certainly do whatever thing goes forth out of our own mouth, to burn incense to the queen of heaven, and to pour out drink offerings to her, as we have done, we, and our fathers, our kings, and our rulers, in the cities of Judah, and in the streets of Jerusalem. For then we had plenty of food, and were well, and saw no evil.

Romans 1:22-32

Professing to be wise, they became fools

Romans 3:9-19

What then? Do we excel? No, in no way; for we have before charged both Jews and Greeks all with being under sin,

Treasury of Scripture Knowledge

Summary

Say not thou, What is the cause that the former days were better than these? for thou dost not inquire wisely concerning this.

Bible References

What

Judges 6:13
And Gideon said to Him, O, my Lord, if Jehovah is with us, why then has all this happened to us? And where are all His miracles which our fathers told us of, saying, Did not Jehovah bring us up from Egypt? But now Jehovah has forsaken us, and delivered us into the hands of the Midianites.
Jeremiah 44:17
But we will certainly do whatever thing goes forth out of our own mouth, to burn incense to the queen of heaven, and to pour out drink offerings to her, as we have done, we, and our fathers, our kings, and our rulers, in the cities of Judah, and in the streets of Jerusalem. For then we had plenty of food, and were well, and saw no evil.

Wisely

Genesis 6:11
The earth also was corrupt before God, and the earth was filled with violence.
Psalm 14:2
Jehovah looked down from Heaven on the sons of men, to see if there were any who understood and sought God.
Isaiah 50:1
So says Jehovah, Where is your mother's bill of divorce, whom I have put away? Or to which of My creditors have I sold you? Behold, you were sold for your iniquities, and your mother is put away for your sins.
Romans 1:22
Professing to be wise, they became fools
Romans 3:9
What then? Do we excel? No, in no way; for we have before charged both Jews and Greeks all with being under sin,