I was thinking the law of tithing could be a terrestrial law. It is a lower law associated with the higher celestial law of consecration, and notice those who are tithed will not be burned at His coming. Neither will those living terrestrial law coincidentally. I think this is because they are living a terrestrial law and those living terrestrial laws will abide the day when the earth is transformed into a terrestrial state (Not kingdom). I have not read any statements on this, but this is my own understanding.