1 Corinthians 9:18

What then is my reward? That, when I preach the gospel, I may offer the gospel without charge, so as not to make full use of my right in the gospel.

1 Corinthians 7:31

and those who use the world, as though they did not make full use of it; for the form of this world is passing away.

Romans 14:15

For if because of food your brother is hurt, you are no longer walking according to love. Do not destroy with your food him for whom Christ died.

1 Corinthians 8:9

But take care that this liberty of yours does not somehow become a stumbling block to the weak.

1 Corinthians 9:6-7

Or do only Barnabas and I not have a right to refrain from working?

1 Corinthians 10:33

just as I also please all men in all things, not seeking my own profit but the profit of the many, so that they may be saved.

2 Corinthians 4:5

For we do not preach ourselves but Christ Jesus as Lord, and ourselves as your bond-servants for Jesus’ sake.

2 Corinthians 11:7-9

Or did I commit a sin in humbling myself so that you might be exalted, because I preached the gospel of God to you without charge?

2 Corinthians 12:13-18

For in what respect were you treated as inferior to the rest of the churches, except that I myself did not become a burden to you? Forgive me this wrong!

1 Thessalonians 2:6

nor did we seek glory from men, either from you or from others, even though as apostles of Christ we might have asserted our authority.

2 Thessalonians 3:8-9

nor did we eat anyone’s bread without paying for it, but with labor and hardship we kept working night and day so that we would not be a burden to any of you;

Treasury of Scripture Knowledge

Summary

What is my reward then? Verily that, when I preach the gospel, I may make the gospel of Christ without charge, that I abuse not my power in the gospel.

General references

Bible References

When

1 Corinthians 9:6
Or do only Barnabas and I not have a right to refrain from working?
1 Corinthians 10:33
just as I also please all men in all things, not seeking my own profit but the profit of the many, so that they may be saved.
2 Corinthians 4:5
For we do not preach ourselves but Christ Jesus as Lord, and ourselves as your bond-servants for Jesus’ sake.
2 Corinthians 11:7
Or did I commit a sin in humbling myself so that you might be exalted, because I preached the gospel of God to you without charge?
2 Corinthians 12:13
For in what respect were you treated as inferior to the rest of the churches, except that I myself did not become a burden to you? Forgive me this wrong!
1 Thessalonians 2:6
nor did we seek glory from men, either from you or from others, even though as apostles of Christ we might have asserted our authority.
2 Thessalonians 3:8
nor did we eat anyone’s bread without paying for it, but with labor and hardship we kept working night and day so that we would not be a burden to any of you;

That i

1 Corinthians 7:31
and those who use the world, as though they did not make full use of it; for the form of this world is passing away.
1 Corinthians 8:9
But take care that this liberty of yours does not somehow become a stumbling block to the weak.
Romans 14:15
For if because of food your brother is hurt, you are no longer walking according to love. Do not destroy with your food him for whom Christ died.

General references

Acts 20:33
I have coveted no one’s silver or gold or clothes.