Acts 17:30

And the times of this ignorance God winked at; but now commandeth all men every where 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 suffered all nations to walk in their own ways.

Romans 3:25

Whom God hath 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 bringeth salvation hath 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 hath God also to the Gentiles granted repentance to 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 ye ignorantly worship, him declare I to you.

Acts 20:21

Testifying both to the Jews, and also to the Greeks, repentance towards God, and faith towards 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 worketh penitence to salvation not to be repented of: but the sorrow of the world worketh death.

1 Peter 4:3

For the time past of our life may suffice us to have wrought the will of the Gentiles, when we walked in lasciviousness, lusts, excess of wine, revelings, banquetings, and abominable idolatries:

Psalm 50:21

These things hast thou done, and I kept silence; thou thoughtest that I was altogether such an one as thyself: but I will reprove thee, and set them in order before thine eyes.

Matthew 3:2

And saying, Repent ye: 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 ye, and believe the gospel.

Luke 13:5

I tell you, No; but, except ye repent, ye shall all likewise perish.

Luke 15:10

Likewise, I say to you, There is joy in the presence of the angels of God over one sinner that repenteth.

Acts 3:19

Repent ye 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 thee from the people, and from the Gentiles, to whom now I send thee,

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 convenient;

Romans 2:4

Or despisest thou the riches of his goodness, and forbearance, and long-suffering; not knowing that the goodness of God leadeth thee to repentance?

Ephesians 4:17-32

This I say therefore, and testify in the Lord, that ye henceforth walk not 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 cometh 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 suffered all nations to walk in their own ways.
Psalm 50:21
These things hast thou done, and I kept silence; thou thoughtest that I was altogether such an one as thyself: but I will reprove thee, and set them in order before thine 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 convenient;
Romans 3:23
For all have sinned, and come short of the glory of God;

General references

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