Ecclesiastes 7:10

Say not, Why were the days which have gone by better than these? Such a question comes not from wisdom.

Genesis 6:11-12

And the earth was evil in God's eyes and full of violent ways.

Judges 6:13

Then Gideon said to him, O my lord, if the Lord is with us why has all this come on us? And where are all his works of power, of which our fathers have given us word, saying, Did not the Lord take us out of Egypt? But now he has given us up, handing us over to the power of Midian.

Psalm 14:2-3

The Lord was looking down from heaven on the children of men, to see if there were any who had wisdom, searching after God.

Isaiah 50:1

This is the word of the Lord: Where is the statement which I gave your mother when I put her away? or to which of my creditors have I given you for money? It was for your sins that you were given into the hands of others, and for your evil-doing was your mother put away.

Jeremiah 44:17-19

But we will certainly do every word which has gone out of our mouths, burning perfumes to the queen of heaven and draining out drink offerings to her as we did, we and our fathers and our kings and our rulers, in the towns of Judah and in the streets of Jerusalem: for then we had food enough and did well and saw no evil.

Romans 1:22-32

Seeming to be wise, they were in fact foolish,

Romans 3:9-19

What then? are we worse off than they? In no way: because we have before made it clear that Jews as well as Greeks are all under the power of 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
Then Gideon said to him, O my lord, if the Lord is with us why has all this come on us? And where are all his works of power, of which our fathers have given us word, saying, Did not the Lord take us out of Egypt? But now he has given us up, handing us over to the power of Midian.
Jeremiah 44:17
But we will certainly do every word which has gone out of our mouths, burning perfumes to the queen of heaven and draining out drink offerings to her as we did, we and our fathers and our kings and our rulers, in the towns of Judah and in the streets of Jerusalem: for then we had food enough and did well and saw no evil.

Wisely

Genesis 6:11
And the earth was evil in God's eyes and full of violent ways.
Psalm 14:2
The Lord was looking down from heaven on the children of men, to see if there were any who had wisdom, searching after God.
Isaiah 50:1
This is the word of the Lord: Where is the statement which I gave your mother when I put her away? or to which of my creditors have I given you for money? It was for your sins that you were given into the hands of others, and for your evil-doing was your mother put away.
Romans 1:22
Seeming to be wise, they were in fact foolish,
Romans 3:9
What then? are we worse off than they? In no way: because we have before made it clear that Jews as well as Greeks are all under the power of sin;

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain