Romans 15:27
For they thought it was a good idea, and [besides] they were indebted to those Jewish Christians. For if the Gentiles [have] shared in the spiritual blessings of the Jews, [then] they owe it to those Jews to help meet their material needs.
1 Corinthians 9:11
If we have planted spiritual seeds [i.e., the Gospel message] among you, is it too much to expect to reap a material harvest from you?
Galatians 6:6
But the person who is taught the word [of God] should provide his teacher with what he needs.
Romans 11:17
But some of the branches [of a cultivated olive tree] were broken off [i.e., God's rejection of the Jews] and you [Gentiles], representing a wild olive tree [branch], were grafted into it. So then, you [Gentiles] were able to benefit from the roots and sap of the olive tree, along with the Jews.