1 Corinthians 9:15
But I have used none of these things: neither have I written these things, that it should be so done unto me: for [it were] better for me to die, than that any man should make my glorying void.
Note 14 at 1Co 9:15: Paul certainly qualified as a minister, and he was so busy with the ministry that he could have received his total income from the offerings of the ministry (see note 13 at 1Co 9:14). However, he voluntarily chose not to use this right (see note 5 at 1Co 9:6). And, in this verse, he made it clear that he hadn't written these things for the purpose of the Corinthians starting to support him at that point. He would rather die than take money from the Corinthians for his personal needs and lose his reward from the Lord (1Co 9:17-18).