1 Corinthians 15:9

not worthy to be called an apostle, because I persecuted the church of God.

Acts 8:3

But Saul made havock of the church, entring into the houses, and dragging out men and women, committed them to prison.

2 Corinthians 12:11

Am I become vain in boasting? ye have forced me to it: for I ought to have been recommended by you, as I have in nothing fallen short of the very chiefest of the apostles, though in myself I am nothing.

Ephesians 3:7-8

of which I was made a minister, according to the gift of the grace of God conferred on me by the effectual operation of his power.

1 Timothy 1:13-15

who before was a blasphemer, and a persecutor, and an oppressor. But I obtained mercy, because I did it ignorantly in unbelief: and the grace of our Lord superabounded,

Acts 9:1-19

But Saul still breathing out threatnings and slaughter against the disciples of the Lord, came to the high priest, and desired of him letters to the synagogues at Damascus,

Acts 22:4-5

And I persecuted those of this persuasion even unto death, binding and delivering into prisons both men and women.

Acts 26:9-11

I indeed once thought with myself, that I ought to do many things contrary to the name of Jesus the Nazarene:

2 Corinthians 11:5

For I think I was not inferior to the very chiefest apostles: and if I am unskilled in speech,

Galatians 1:13

For ye have heard of my conversation formerly in Judaism, that I outragiously persecuted the church of God, and laid it waste:

Galatians 1:23

But only they had heard that he who persecuted us before, now preacheth the faith which he formerly would have destroyed.

Philippians 3:6

as to zeal persecuting the church, as to the righteousness of the law blameless: but those things,

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 made havock of the church, entring into the houses, and dragging out men and women, committed them to prison.
Acts 9:1
But Saul still breathing out threatnings and slaughter against the disciples of the Lord, came to the high priest, and desired of him letters to the synagogues at Damascus,
Acts 22:4
And I persecuted those of this persuasion even unto death, binding and delivering into prisons both men and women.
Acts 26:9
I indeed once thought with myself, that I ought to do many things contrary to the name of Jesus the Nazarene:
Galatians 1:13
For ye have heard of my conversation formerly in Judaism, that I outragiously persecuted the church of God, and laid it waste:
Philippians 3:6
as to zeal persecuting the church, as to the righteousness of the law blameless: but those things,
1 Timothy 1:13
who before was a blasphemer, and a persecutor, and an oppressor. But I obtained mercy, because I did it ignorantly in unbelief: and the grace of our Lord superabounded,

General references

Luke 17:10
I think not. So likewise ye, when ye have done all things that were commanded you, say we are unprofitable servants, for we have done only what we ought to do.
Acts 8:3
But Saul made havock of the church, entring into the houses, and dragging out men and women, committed them to prison.