Acts 17:30

Therefore truly, God having overlooked the times of ignorance, now announces to all men everywhere to repent:

Luke 24:47

And repentance and remission of sins to be proclaimed in his name to all nations, having begun from Jerusalem.

Acts 14:16

Who in past generations suffered all nations to go in their ways.

Romans 3:25

Whom God had set before a propitiatory by faith in his blood, for a manifestation of his justice by passing over of sins before existing, in the sufferance of God;

Mark 6:12

And having gone out, they proclaimed that they repent.

Titus 2:11-12

For the grace of God who saves, was manifested to all men,

Matthew 4:17

From then Jesus began to proclaim, and to say, Repent: for the kingdom of the heavens has drawn near.

Acts 11:18

And having heard these, they were silent, and honoured God, saying, For also God gave the nations repentance to life.

Acts 17:23

For having passed by, and beholding your venerations, I found also an altar upon which was inscribed, TO THE UNKNOWN GOD. Whom not knowing therefore ye reverence, him I announce to you.

Acts 20:21

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

Romans 3:23

For all have sinned, and failed of the glory of God;

2 Corinthians 7:10

For grief according to God works repentance to salvation not to be repented of: but grief of the world works death.

1 Peter 4:3

For the time of life passed over sufficient for us to have wrought the will of the nations, having gone in licentiousness, eager desires, drunkenness, revellings, drinkings, and criminal idolatries:

Psalm 50:21

These things thou didst and I was silent; thou thoughtest, being, I shall be like to thee: I will reprove thee, and I will set it in order before thine eyes.

Matthew 3:2

And saying, Repent, for the kingdom of the heavens has drawn near.

Mark 1:15

And saying, That the time has been completed, and the kingdom of God has drawn near: repent ye, and believe in the good news.

Luke 13:5

No, I say: but except ye repent, ye shall all likewise perish.

Luke 15:10

So, I say to you, joy is in heaven before the messengers of God for one sinful changing the mind.

Acts 3:19

Therefore repent, and return, for your sins to be wiped out, so that times of refreshment might come from the face of the Lord;

Acts 26:17-20

Taking thee away from people, and nations, to whom I now send thee.

Romans 1:28

And as they chose not to have God in knowledge, God delivered them to an adulterated purpose, to do things not fitting;

Romans 2:4

Or the abundance of his goodness and forbearance and long suffering dos thou despise; not knowing that the goodness of God brings thee to repentance?

Ephesians 4:17-32

Therefore this I say, and testify in the Lord, that ye no more walk as also the rest of the nations, in the vanity of their mind,

Ephesians 5:6-8

Let none lead you astray with vain words: for by these things comes the anger of God upon the sons of disobedience.

1 Peter 1:14-15

As children of obedience, not as formerly conforming yourselves to eager desire 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 past generations suffered all nations to go in their ways.
Psalm 50:21
These things thou didst and I was silent; thou thoughtest, being, I shall be like to thee: I will reprove thee, and I will set it in order before thine eyes.
Romans 1:28
And as they chose not to have God in knowledge, God delivered them to an adulterated purpose, to do things not fitting;
Romans 3:23
For all have sinned, and failed of the glory of God;

General references

Numbers 15:27
And if one soul shall sin in. error, and he brought a she goat the daughter of a goat, for sin.
Ecclesiastes 12:14
For God will bring every work into judgment, with every thing hidden, whether good, and whether evil.
Luke 5:32
I came not to call the just, but the sinful to repentance.