‘But let him who is taught in the word communicate to him who teaches in all good things.'
In thinking of the load that each man must carry as he seeks to help others, Paul's thoughts turn to the burdens borne especially by those who ministered the word in those days, for it was often difficult for such to earn a living (not all were tentmakers). Those who are well taught in the word by others should therefore be willing to share all good things with those who do the teaching, thus helping them with their burden.
Perhaps this verse should be above the doors of some churches. Ministers should not have to just ‘make do' when their congregations thrive. They should share in the good things that their congregations enjoy, while they themselves share with their congregations the good things that they themselves have learned.