Rom.15.27  they were pleased to do it, and indeed they are in debt to them, for if the Gentiles have come to share in their spiritual blessings, they ought also to be of service to them in material blessings.
1Cor.9.11  If we have sown spiritual good among you, is it too much if we reap your material benefits?

Hyper-concordance v1.1, by Sean Boisen. Scripture verses taken from the Revised Standard Version, copyright 1952, 1971.