Again I have a hard time understanding what Paul wanted to say:
Κοινωνείτω δὲ ὁ κατηχούμενος τὸν λόγον τῷ κατηχοῦντι ἐν πᾶσιν ἀγαθοῖς.
What does Paul want the the one being taught to do?
He wants him to love and do as he pleases.
Pay the preacher! (Or not)
I say not. In order to pay a preacher, a church needs to have money. I have come to believe that the two things that the church should not have are money and power.
Paul did not take money for preaching the gospel.
None of this has anything to do with the Greek.
I think it has to do with the Greek. At least for me.
Κοινωνείτω (…) ἐν πᾶσιν ἀγαθοῖς
I am not quite sure whether this could mean “share in all the morally good”. That is: could it refer to basically imitating (thus “sharing”) the teacher´s ethical lifestyle, rather than actually sharing goods?
I don’t think so, since the σπείρων imagery in 7ff seems to indicate the giving of goods.
This is a text I can not remember having heard taught or preached. That’s rare. Very rare. I looked at the secondary literature I have on hand (H. Ridderbos, F.F. Bruce, Lightfoot, Alford) and they all (except H.A.W. Meyer) agree that the sharing refers to goods or material support. Verse six sits somewhat awkwardly in the context. Some versions set it off typographically as an isolated saying.
Finding agreement among English commentators is never a big surprise. The text is inherently ambiguous so hermeneutical assumptions are going to be the center of contention.
Compare the ABS Modern Greek:
Ἐκεῖνος, ὁ ὁποῖος κατηχεῖται τὸν λόγον, ἄς μεταδίδῃ εἰς τὸν κατηχητὴν ἀπὸ ὅλα τὰ ἀγαθά.