'Maintenance' in the Bible

So also [on the same principle] the Lord directed those who preach the gospel to get their living from the gospel.

But if a widow has children or grandchildren [who are adults], see to it that these first learn to show great respect to their own family [as their religious duty and natural obligation], and to compensate their parents or grandparents [for their upbringing]; for this is acceptable and pleasing in the sight of God.