1 Corinthians 9:18
Then what is my reward? It is being able to preach the good news without receiving financial support [for it], so as not to claim my full rights in [the work of preaching] the good news.
1 Corinthians 7:31
And those who make use of the things of the world [should live] as though they were not [really] involved with them. For the world as we know it is passing away. [Note: The five "as though's" of verses 29-31 are intended to emphasize that Christians should live with eternity in mind and not to become preoccupied with even legitimate earthly circumstances].
Romans 14:15
For if your brother is hurt [spiritually] by [your eating a certain] food, you are no longer acting lovingly [toward him]. Do not destroy [spiritually] the person Christ died for by what you eat.
1 Corinthians 8:9
But pay attention [to this], so that somehow this liberty of yours [i.e., to eat whatever you want to] does not become an occasion over which weak people could fall [away from God].
1 Corinthians 9:6-7
Or, are Barnabas and I the only ones who must have a [secular] job for our living?
1 Corinthians 10:33
For even I myself [try] to please everyone in every way, and not to look out [just] for my own good, but [also] for the good of many people, so that they may be saved.
2 Corinthians 4:5
For we do not preach ourselves, but [we preach] Christ Jesus as Lord, and ourselves as your slaves for Jesus' sake.
2 Corinthians 11:7-9
Or, did I sin by putting myself down in order to build you people up, because I preached the Gospel of God to you without taking [financial] support?
2 Corinthians 12:13-18
For in what way were you people inferior to the rest of the churches, unless it was that I was not a [financial] burden to you? Forgive me for this wrong.
1 Thessalonians 2:6
[And] we were not looking for honor from people, either from you or from anyone else, even though, as apostles of Christ, we could have become a burden [to you]. [Note: The idea seems to be that the apostles could have claimed financial support, but chose not to].
2 Thessalonians 3:8-9
neither did we eat anyone's food without paying for it. But by hard labor and toil, we worked night and day so as not to be a burden to any of you.