Acts 17:30

And the times of this ignorance God overlooked; but now commands all men everywhere to repent:

Luke 24:47

And that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem.

Acts 14:16

Who in times past allowed all nations to walk in their own ways.

Romans 3:25

Whom God has set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God;

Mark 6:12

And they went out, and preached that men should repent.

Titus 2:11-12

For the grace of God that brings salvation has appeared to all men,

Matthew 4:17

From that time Jesus began to preach, and to say, Repent: for the kingdom of heaven is at hand.

Acts 11:18

When they heard these things, they held their peace, and glorified God, saying, Then has God also to the Gentiles granted repentance unto life.

Acts 17:23

For as I passed by, and beheld your devotions, I found an altar with this inscription, TO THE UNKNOWN GOD. Whom therefore you ignorantly worship, him declare I unto you.

Acts 20:21

Testifying both to the Jews, and also to the Greeks, repentance toward God, and faith toward our Lord Jesus Christ.

Romans 3:23

For all have sinned, and come short of the glory of God;

2 Corinthians 7:10

For godly sorrow works repentance to salvation not to be regretted: but the sorrow of the world works death.

1 Peter 4:3

For the time past of our life will suffice us to have done the will of the Gentiles, when we walked in licentiousness, lusts, excess of wine, reveling, carousing, and abominable idolatries:

Psalm 50:21

These things have you done, and I kept silence; you thought that I was altogether such a one as yourself: but I will rebuke you, and set them in order before your eyes.

Matthew 3:2

And saying, Repent: for the kingdom of heaven is at hand.

Mark 1:15

And saying, The time is fulfilled, and the kingdom of God is at hand: repent, and believe the gospel.

Luke 13:5

I tell you, Nay: but, except you repent, you shall all likewise perish.

Luke 15:10

Likewise, I say unto you, there is joy in the presence of the angels of God over one sinner that repents.

Acts 3:19

Repent therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord;

Acts 26:17-20

Delivering you from the people, and from the Gentiles, unto whom now I send you,

Romans 1:28

And even as they did not like to retain God in their knowledge, God gave them over to a reprobate mind, to do those things which are not proper;

Romans 2:4

Or despise you the riches of his goodness and forbearance and longsuffering; not knowing that the goodness of God leads you to repentance?

Ephesians 4:17-32

This I say therefore, and testify in the Lord, that you no longer walk as other Gentiles walk, in the vanity of their mind,

Ephesians 5:6-8

Let no man deceive you with vain words: for because of these things comes the wrath of God upon the children of disobedience.

1 Peter 1:14-15

As obedient children, not fashioning yourselves according to the former lusts in your ignorance:

Treasury of Scripture Knowledge

Summary

And the times of this ignorance God winked at; but now commandeth all men every where to repent:

Bible References

The times

Acts 14:16
Who in times past allowed all nations to walk in their own ways.
Psalm 50:21
These things have you done, and I kept silence; you thought that I was altogether such a one as yourself: but I will rebuke you, and set them in order before your eyes.
Romans 1:28
And even as they did not like to retain God in their knowledge, God gave them over to a reprobate mind, to do those things which are not proper;
Romans 3:23
For all have sinned, and come short of the glory of God;

General references

Numbers 15:27
And if any soul sins through ignorance, then he shall bring a female goat of the first year for a sin offering.
Ecclesiastes 12:14
For God shall bring every work into judgment, including every secret thing, whether it be good, or whether it be evil.
Luke 5:32
I came not to call the righteous, but sinners to repentance.