1 Timothy 1:13

Though I had said violent words against God, and done cruel acts, causing great trouble: but I was given mercy, because I did it without knowledge, not having faith;

Acts 8:3

But Saul was burning with hate against the church, going into every house and taking men and women and putting them in prison.

Acts 3:17

And now, my brothers, I am conscious that you did this, as did your rulers, without knowledge.

Numbers 15:30

But the person who does wrong in the pride of his heart, if he is one of you or of another nation by birth, is acting without respect for the Lord, and will be cut off from his people.

Hosea 2:23

And I will put her as seed in the earth, and I will have mercy on her to whom no mercy was given; and I will say to those who were not my people, You are my people, and they will say, My God.

Luke 12:47

And the servant who had knowledge of his lord's desires and was not ready for him and did not do as he was ordered, will be given a great number of blows;

Luke 23:34

And Jesus said, Father, let them have forgiveness, for they have no knowledge of what they are doing. And they made division of his clothing among them by the decision of chance.

John 9:39-41

And Jesus said, I came into this world to be a judge, so that those who do not see may see, and those who see may become blind.

Acts 9:1

But Saul, still burning with desire to put to death the disciples of the Lord, went to the high priest,

Acts 9:5

And he said, Who are you, Lord? And he said, I am Jesus, whom you are attacking:

Acts 9:13

But Ananias said, Lord, I have had accounts of this man from a number of people, how much evil he has done to your saints at Jerusalem:

Acts 22:4

And I made attacks on this Way, even to death, taking men and women and putting them in prison.

Acts 26:9-11

For I, truly, was of the opinion that it was right for me to do a number of things against the name of Jesus of Nazareth.

Romans 5:20-21

And the law came in addition, to make wrongdoing worse; but where there was much sin, there was much more grace:

Romans 11:30-31

For as you, in time past, were not under the rule of God, but now have got mercy through their turning away,

1 Corinthians 7:25

Now about virgins I have no orders from the Lord: but I give my opinion as one to whom the Lord has given mercy to be true to him.

1 Corinthians 15:9

For I am the least of the Apostles, having no right to be named an Apostle, because of my cruel attacks on the church of God.

Galatians 1:13

For news has come to you of my way of life in the past in the Jews' religion, how I was cruel without measure to the church of God, and did great damage to it:

Philippians 3:6

In bitter hate I was cruel to the church; I kept all the righteousness of the law to the last detail.

1 Timothy 1:16

But for this reason I was given mercy, so that in me, the chief of sinners, Jesus Christ might make clear all his mercy, as an example to those who in the future would have faith in him to eternal life.

Hebrews 4:16

Then let us come near to the seat of grace without fear, so that mercy may be given to us, and we may get grace for our help in time of need.

Hebrews 6:4-8

As for those who at one time saw the light, tasting the good things from heaven, and having their part in the Holy Spirit,

Hebrews 10:26-29

For if we do evil on purpose after we have had the knowledge of what is true, there is no more offering for sins,

1 Peter 2:10

In the past you were not a people, but now you are the people of God; then there was no mercy for you, but now mercy has been given to you.

2 Peter 2:21-22

For it would have been better for them to have had no knowledge of the way of righteousness, than to go back again from the holy law which was given to them, after having knowledge of it.

Treasury of Scripture Knowledge

Summary

Who was before a blasphemer, and a persecutor, and injurious: but I obtained mercy, because I did it ignorantly in unbelief.

Bible References

Was

Acts 8:3
But Saul was burning with hate against the church, going into every house and taking men and women and putting them in prison.
Acts 9:1
But Saul, still burning with desire to put to death the disciples of the Lord, went to the high priest,
Acts 22:4
And I made attacks on this Way, even to death, taking men and women and putting them in prison.
Acts 26:9
For I, truly, was of the opinion that it was right for me to do a number of things against the name of Jesus of Nazareth.
1 Corinthians 15:9
For I am the least of the Apostles, having no right to be named an Apostle, because of my cruel attacks on the church of God.
Galatians 1:13
For news has come to you of my way of life in the past in the Jews' religion, how I was cruel without measure to the church of God, and did great damage to it:
Philippians 3:6
In bitter hate I was cruel to the church; I kept all the righteousness of the law to the last detail.

General references

Leviticus 13:16
Or if the diseased flesh is turned again and changed to white then he is to come to the priest,
Numbers 15:27
And if one person does wrong, without being conscious of it, then let him give a she-goat of the first year for a sin-offering.
Mark 2:10
But so that you may see that the Son of man has authority for the forgiveness of sins on earth, (he said to the man,)
Luke 12:10
And if anyone says a word against the Son of man, he will have forgiveness: but for him who says evil words against the Holy Spirit, there will be no forgiveness.
Luke 19:10
For the Son of man came to make search for those who are wandering from the way, and to be their Saviour.
John 16:9
Of sin, because they have not faith in me;
Acts 8:3
But Saul was burning with hate against the church, going into every house and taking men and women and putting them in prison.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain