Acts 17:30

And the time of this ignorance God regarded not: but now he biddeth all men everywhere to repent,

Luke 24:47

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

Acts 14:16

the which in times past suffered all nations to walk in their own ways.

Romans 3:25

- whom God hath set forth for a mercy seat through faith in his blood, to show the righteousness which before him is of valour, in that he forgiveth the sins that are passed,

Mark 6:12

And they went out and preached, that they should repent:

Titus 2:11-12

For the grace of God, that bringeth salvation unto all men, hath appeared

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 this, they held their peace and glorified God, saying, "Then hath God also to the Gentiles granted repentance unto life."

Acts 17:23

For as I passed by and beheld the manner how ye worship your gods, I found an altar wherein was written, Unto the unknown God. Whom ye then ignorantly worship, him show I unto you:

Acts 20:21

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

Romans 3:23

There is no difference: For all have sinned, and lack the praise that is of valour before God:

2 Corinthians 7:10

For ye sorrowed godly: so that in nothing were ye hurt by us. For godly sorrow causeth repentance, unto salvation not to be repented of: when worldly sorrow causeth death.

1 Peter 4:3

For it is sufficient for us that we have spent the time that is past of the life, after the will of the gentiles; walking in wantonness, lusts, drunkenness, in eating, drinking, and in abominable idolatry.

Psalm 50:21

This thou doest, while I hold my tongue: and thinkest wickedly that I am even such a one as thyself; but I will reprove thee, and set before thee the things that thou hast done.

Matthew 3:2

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

Mark 1:15

and saying, "The time is full come, and the kingdom of God is even at hand. Repent, and believe the gospel."

Luke 13:5

I tell you, Nay: But except ye repent, ye all shall likewise perish."

Luke 15:10

Likewise I say unto you, Joy is made in the presence of the angels of God over one sinner that repenteth."

Acts 3:19

Repent ye, therefore, and turn: that your sins may be done away when the time of refreshing cometh, which we shall have of the presence of the Lord,

Acts 26:17-20

delivering thee from the people, and from the gentiles, unto thee which now I send thee,

Romans 1:28

And as it seemed not good unto them to be a known of God, even so God delivered them up unto a lewd mind, that they should do those things which were not comely,

Romans 2:4

Either despisest thou the riches of his goodness and patience, and long sufferance? And rememberest not how that the kindness 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 vanity of their mind,

Ephesians 5:6-8

Let no man deceive you with vain words. For through such things cometh the wrath of God upon the children of unbelief.

1 Peter 1:14-15

as obedient children, not fashioning yourselves unto your old lusts of 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
the which in times past suffered all nations to walk in their own ways.
Psalm 50:21
This thou doest, while I hold my tongue: and thinkest wickedly that I am even such a one as thyself; but I will reprove thee, and set before thee the things that thou hast done.
Romans 1:28
And as it seemed not good unto them to be a known of God, even so God delivered them up unto a lewd mind, that they should do those things which were not comely,
Romans 3:23
There is no difference: For all have sinned, and lack the praise that is of valour before God:

General references

Numbers 15:27
If any one soul sin through ignorance he shall bring a she-goat of a year old for a sin offering.
Ecclesiastes 12:14
For God shall judge all works and secret things, whether they be good or evil.
Luke 5:32
I came not to call the righteous: but the sinners to repentance."