1 Corinthians 9:6-14

Or, are Barnabas and I the only ones who must have a [secular] job for our living?

Galatians 6:6

But the person who is taught the word [of God] should provide his teacher with what he needs.

Treasury of Scripture Knowledge

Summary

Also the firstborn of our sons, and of our cattle, as it is written in the law, and the firstlings of our herds and of our flocks, to bring to the house of our God, unto the priests that minister in the house of our God:

Bible References

Unto

1 Corinthians 9:6
Or, are Barnabas and I the only ones who must have a [secular] job for our living?
Galatians 6:6
But the person who is taught the word [of God] should provide his teacher with what he needs.