Well I won't get into it too much because I'm not sure how much it will benefit, but they earned a paycheck then as well, and provision for these particular costs in the OT is accounted for by mandatory giving outside of the tithes, specifically, through the temple tax, which was a monetary payment. These costs are not what is meant by "meat into His house," which specifically refers to material food for the Levites, foreigners, orphans and widows. My main concern is that in many churches, we seem to have a tendency of robbing God by ignoring His heart of compassion and a means of provision for particular persons, and using those funds for ourselves instead on an increasingly slippery slope of justification.