1 Corinthians 9:18

What then is my reward? That, while preaching the good-news, I may make the good-news of the Christ without charge, in order not to make full use of my right in the good-news.

1 Corinthians 7:31

and those who use this world, as not making full use, for the form of this world passes away.

Romans 14:15

For if thy brother is distressed because of food, thou no longer walk according to love. Do not destroy with thy food that man for whom Christ died.

1 Corinthians 8:9

But take heed lest somehow this privilege of yours becomes a stumbling-block to those who are weak.

1 Corinthians 9:6-7

Or have only I and Barnabas no right not to be occupied earning a living?

1 Corinthians 10:33

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

2 Corinthians 4:5

For we preach not ourselves, but Christ Jesus as Lord, and ourselves are your bondmen through Jesus.

2 Corinthians 11:7-9

Or did I commit a sin lowering myself so that ye might be lifted up, because I preached to you the good-news of God freely?

2 Corinthians 12:13-18

For what is there which ye were inferior to the other congregations? Except that I myself was not burdensome to you? Forgive me this wrong.

1 Thessalonians 2:6

nor seeking glory from men, neither from you nor from others. While able to bear down as apostles of Christ,

2 Thessalonians 3:8-9

nor did we eat bread gratis from any man, but in labor and toil, working night and day in order not to burden 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 have only I and Barnabas no right not to be occupied earning a living?
1 Corinthians 10:33
just as I also strive to please in all things for all men, not seeking my own advantage, but that of the many, so that they may be saved.
2 Corinthians 4:5
For we preach not ourselves, but Christ Jesus as Lord, and ourselves are your bondmen through Jesus.
2 Corinthians 11:7
Or did I commit a sin lowering myself so that ye might be lifted up, because I preached to you the good-news of God freely?
2 Corinthians 12:13
For what is there which ye were inferior to the other congregations? Except that I myself was not burdensome to you? Forgive me this wrong.
1 Thessalonians 2:6
nor seeking glory from men, neither from you nor from others. While able to bear down as apostles of Christ,
2 Thessalonians 3:8
nor did we eat bread gratis from any man, but in labor and toil, working night and day in order not to burden any of you.

That i

1 Corinthians 7:31
and those who use this world, as not making full use, for the form of this world passes away.
1 Corinthians 8:9
But take heed lest somehow this privilege of yours becomes a stumbling-block to those who are weak.
Romans 14:15
For if thy brother is distressed because of food, thou no longer walk according to love. Do not destroy with thy food that man for whom Christ died.

General references

Acts 20:33
I coveted no man's silver, or gold, or apparel.