2 Corinthians 11:5

For I consider myself not in the least inferior to the most eminent apostles.

2 Corinthians 12:11-12

I have become foolish; you yourselves compelled me. Actually I should have been commended by you, for in no respect was I inferior to the most eminent apostles, even though I am a nobody.

1 Corinthians 15:10

But by the grace of God I am what I am, and His grace toward me did not prove vain; but I labored even more than all of them, yet not I, but the grace of God with me.

Galatians 2:6-9

But from those who were of high reputation (what they were makes no difference to me; God shows no partiality)—well, those who were of reputation contributed nothing to me.

Treasury of Scripture Knowledge

Summary

For I suppose I was not a whit behind the very chiefest apostles.

General references

Bible References

I was not

2 Corinthians 12:11
I have become foolish; you yourselves compelled me. Actually I should have been commended by you, for in no respect was I inferior to the most eminent apostles, even though I am a nobody.
1 Corinthians 15:10
But by the grace of God I am what I am, and His grace toward me did not prove vain; but I labored even more than all of them, yet not I, but the grace of God with me.
Galatians 2:6
But from those who were of high reputation (what they were makes no difference to me; God shows no partiality)—well, those who were of reputation contributed nothing to me.

General references

Job 13:2
What you know I also know;
I am not inferior to you.