1 Corinthians 15:9

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

Acts 8:3

But Saul ravaged the church, entering house after house, and dragging both men and women, committed them to prison.

2 Corinthians 12:11

I have become a fool; it is ye that compelled me. For I ought to have been commended by you; for in nothing was I behind the very foremost apostles, though I am nothing.

Ephesians 3:7-8

of which I became a minister according to the gift of the grace of God, given to me according to the effectual working of his power.

1 Timothy 1:13-15

though formerly I was a blasphemer, and a persecutor, and a doer of outrage; but I obtained mercy, because I did it ignorantly, in unbelief;

Acts 9:1-19

But Saul, yet breathing out threatening and slaughter against the disciples of the Lord, went to the high priest,

Acts 22:4-5

And I persecuted this way [of belief] even to death, binding and putting into prisons both men and women,

Acts 26:9-11

I indeed thought with myself that I ought to do many things in opposition to the name of Jesus the Nazarene.

2 Corinthians 11:5

For I suppose that I am in no respect behind the very foremost apostles.

Galatians 1:13

For ye have heard of my conduct formerly in Judaism; that beyond measure I persecuted the church of God, and was destroying it,

Galatians 1:23

but they were only hearing that "He who was once our persecutor is now preaching the faith which he was once destroying";

Philippians 3:6

as to zeal, persecuting the church; as to the righteousness which is in the Law, blameless.

Treasury of Scripture Knowledge

Summary

For I am the least of the apostles, that am not meet to be called an apostle, because I persecuted the church of God.

General references

Bible References

Because

Acts 8:3
But Saul ravaged the church, entering house after house, and dragging both men and women, committed them to prison.
Acts 9:1
But Saul, yet breathing out threatening and slaughter against the disciples of the Lord, went to the high priest,
Acts 22:4
And I persecuted this way [of belief] even to death, binding and putting into prisons both men and women,
Acts 26:9
I indeed thought with myself that I ought to do many things in opposition to the name of Jesus the Nazarene.
Galatians 1:13
For ye have heard of my conduct formerly in Judaism; that beyond measure I persecuted the church of God, and was destroying it,
Philippians 3:6
as to zeal, persecuting the church; as to the righteousness which is in the Law, blameless.
1 Timothy 1:13
though formerly I was a blasphemer, and a persecutor, and a doer of outrage; but I obtained mercy, because I did it ignorantly, in unbelief;

General references

Luke 17:10
So also do ye, when ye have done all that hath been commanded you, say, We are unprofitable servants; we have done what we were bound to do.
Acts 8:3
But Saul ravaged the church, entering house after house, and dragging both men and women, committed them to prison.