1 Timothy 1:13

[even] though I had previously spoken against Christ, and persecuted [Christians] and acted outrageously. However, I obtained mercy because I acted out of ignorance, not believing [in Christ].

Acts 8:3

But Saul brought devastation to the church by entering everyone's house and dragging men and women off to jail.

Acts 3:17

"And now brothers, I know that [both] you and your [Jewish] rulers acted in ignorance [of what you were really doing].

Luke 12:47

And that slave who knew what his master wanted, but did not make preparations [i.e., for his master's return], or do what his master wanted, will be whipped with many lashes.

Luke 23:34

Then Jesus called out, "Father, forgive these people [i.e., the ones responsible for crucifying Him], for they do not know [i.e., realize] what they are doing." Then the soldiers [See John 19:23] divided Jesus' clothing among them by gambling for them.

John 9:39-41

And Jesus said, "I came to this world to judge [it], so that people who can not see [spiritually] will [be able to] see; and those who [think they can] see [spiritually] will become blind."

Acts 9:1

With every breath [it seemed], Saul [expressed his desire to] threaten and murder the Lord's disciples and [even] went to the head priest

Acts 9:5

Saul replied, "Who are you, sir?" And the voice said, "It is I, Jesus, whom you are persecuting,

Acts 9:13

But Ananias answered, "Lord, I have heard from many people about how much harm this man has done to your holy people at Jerusalem.

Acts 22:4

And I persecuted this 'Way' [even to the point of] putting people to death. [I had] both men and women bound [in chains] and locked up in prisons.

Acts 26:9-11

I truly thought within myself [that it was right] to do many things which were opposed to the name of Jesus from Nazareth.

Romans 5:20-21

Now the law of Moses was introduced [into the world] in order to cause sin to increase [i.e., it defined many things to be wrong that were previously not regarded as sin]. But with the increase of sin, God's unearned favor increased all the more.

Romans 11:30-31

For you Gentiles were disobedient to God in the past, but now you have obtained [God's] mercy by means of the disobedience of the Jews.

1 Corinthians 7:25

Now I have no command from the Lord concerning [what you wrote about] unmarried women. [Note: The word here is "virgins" but some think it includes both males and females]. But I give my advice as someone who has received the Lord's mercy to be counted trustworthy.

1 Corinthians 15:9

For I am the least [significant] of the apostles, and am not worthy to be called an apostle, because I persecuted the church of God.

Galatians 1:13

For you have heard about the way I lived in the past, when I was in the Jewish religion, [that is], how I mercilessly persecuted the church of God, making havoc of it.

Philippians 3:6

As far as enthusiasm is concerned, I persecuted the church; as far as being righteous according to the law of Moses is concerned, I was without just blame.

1 Timothy 1:16

However, even though I was the worst, I obtained mercy so that the patience of Jesus Christ could be shown toward the worst [of sinners] as an example for those people who would later believe in Him in order to [receive] never ending life.

Hebrews 4:16

So, we should approach, with confidence, God's throne of unearned favor, so we can receive mercy and obtain that favor to help us when we need it.

Hebrews 6:4-8

[These are people] who were once enlightened [by the Gospel message], who had experienced the gift from heaven [i.e., forgiveness, never ending life, etc. See Rom. 6:23], who had partaken of the Holy Spirit [See Acts 2:38],

Hebrews 10:26-29

For if we go on sinning intentionally, after we have received the full knowledge of the truth, there is no longer any sacrifice for [our] sins.

1 Peter 2:10

At one time you [Gentiles] were not a [chosen] people, but now you are God's [special] people. Once you had not received [His] mercy, but now you have received it.

2 Peter 2:21-22

It would have been better for them if they had not known the right way [to God] than, after knowing it, to turn back from the sacred message that had been presented to them.

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 brought devastation to the church by entering everyone's house and dragging men and women off to jail.
Acts 9:1
With every breath [it seemed], Saul [expressed his desire to] threaten and murder the Lord's disciples and [even] went to the head priest
Acts 22:4
And I persecuted this 'Way' [even to the point of] putting people to death. [I had] both men and women bound [in chains] and locked up in prisons.
Acts 26:9
I truly thought within myself [that it was right] to do many things which were opposed to the name of Jesus from Nazareth.
1 Corinthians 15:9
For I am the least [significant] of the apostles, and am not worthy to be called an apostle, because I persecuted the church of God.
Galatians 1:13
For you have heard about the way I lived in the past, when I was in the Jewish religion, [that is], how I mercilessly persecuted the church of God, making havoc of it.
Philippians 3:6
As far as enthusiasm is concerned, I persecuted the church; as far as being righteous according to the law of Moses is concerned, I was without just blame.

General references

Mark 2:10
But, so you will know that the Son of man has authority on earth to forgive sins (He then said to the paralyzed man),
Luke 12:10
And every person who speaks an [abusive] word against the Son of man will be forgiven of it, but the person who speaks abusive words against the Holy Spirit will not be forgiven of it.
Luke 19:10
For the Son of man came to search for and save those who were lost."
John 16:9
[The world will be proven guilty] of sin for not believing in me.
Acts 8:3
But Saul brought devastation to the church by entering everyone's house and dragging men and women off to jail.