Acts 17:30

God therefore, having overlooked the times of ignorance, now enjoins men that they shall all everywhere repent,

Luke 24:47

and that repentance and remission of sins should be preached in his name to all the nations beginning at Jerusalem.

Acts 14:16

who in the past generations suffered all the nations to go in their own ways,

Romans 3:25

whom God has set forth a mercy-seat, through faith in his blood, for the shewing forth of his righteousness, in respect of the passing by the sins that had taken place before, through the forbearance of God;

Mark 6:12

And they went forth and preached that they should repent;

Titus 2:11-12

For the grace of God which carries with it salvation for all men has appeared,

Matthew 4:17

From that time began Jesus to preach and to say, Repent, for the kingdom of the heavens has drawn nigh.

Acts 11:18

And when they heard these things they held their peace, and glorified God, saying, Then indeed God has to the nations also granted repentance to life.

Acts 17:23

for, passing through and beholding your shrines, I found also an altar on which was inscribed, To the unknown God. Whom therefore ye reverence, not knowing him, him I announce to you.

Acts 20:21

testifying to both Jews and 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 grief according to God works repentance to salvation, never to be regretted; but the grief of the world works death.

1 Peter 4:3

For the time past is sufficient for us to have wrought the will of the Gentiles, walking in lasciviousness, lusts, wine-drinking, revels, drinkings, and unhallowed idolatries.

Psalm 50:21

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

Matthew 3:2

and saying, Repent, for the kingdom of the heavens has drawn nigh.

Mark 1:15

and saying, The time is fulfilled and the kingdom of God has drawn nigh; repent and believe in the glad tidings.

Luke 13:5

No, I say to you, but if ye repent not, ye shall all perish in like manner.

Luke 15:10

Thus, I say unto you, there is joy before the angels of God for one repenting sinner.

Acts 3:19

Repent therefore and be converted, for the blotting out of your sins, so that times of refreshing may come from the presence of the Lord,

Acts 26:17-20

taking thee out from among the people, and the nations, to whom I send thee,

Romans 1:28

And according as they did not think good to have God in their knowledge, God gave them up to a reprobate mind to practise unseemly things;

Romans 2:4

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

Ephesians 4:17-32

This I say therefore, and testify in the Lord, that ye should no longer walk as the rest of the nations walk in the vanity of their mind,

Ephesians 5:6-8

Let no one deceive you with vain words, for on account of these things the wrath of God comes upon the sons of disobedience.

1 Peter 1:14-15

as children of obedience, not conformed to your 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 the past generations suffered all the nations to go in their own ways,
Psalm 50:21
These things hast thou done, and I kept silence; thou thoughtest that I was altogether as thyself: but I will reprove thee, and set them in order before thine eyes.
Romans 1:28
And according as they did not think good to have God in their knowledge, God gave them up to a reprobate mind to practise unseemly things;
Romans 3:23
for all have sinned, and come short of the glory of God;

General references

Numbers 15:27
And if one soul sin through inadvertence, then he shall present a yearling she-goat for a sin-offering.
Ecclesiastes 12:14
For God shall bring every work into judgment, with every secret thing, whether it be good or whether it be evil.
Luke 5:32
I am not come to call righteous persons, but sinful ones to repentance.