"who else is giving food in these days to God's people?""
Why do we need food at all? Then the response would be, that we need physical food to live.
Jesus' sacrifice atones for our sins. Not food based.
My problem is that they base everything on one scripture, which we don't know they full context. There may be more or less
that Jesus said about that.
Should we care about what the master says more than what a slave says?