The same principle is taught by Moses in the privileges granted to the priests in the temple. God gave to Aaron and his sons a right to eat of certain sacrifices offered up in the temple (Exodus 29:27-28; Numbers 18:20-24; Leviticus 6:16, 26).
The Greek word translated ‘live’ is ‘feed’. Again it is no more than subsistence. Our translators have chosen to translate it ‘live’ but the Greek is ‘feed’. All the terms of mere subsistence provide no justification for wealth with preachers.