I was reading a post from Richard Barcellos on the Sabbath and came across and very concise and helpful paragraph in regards to the general equity of old covenant laws.
Someone on his blog raised on objection, saying:
I would defend what Dr. Schreiner said. I believe that abiding principles can be drawn from the Sabbath without having to hold to the abiding validity of the Sabbath Law itself. Those aren’t mutually exclusive concepts. For instance, in Leviticus 23:22, we are told that the farmer is to leave a portion of his field for the sojourner. So, if a hungry man passes by, he can take a little food on his way. I assume that most would agree that this is a ceremonial law that has ceased in the New Covenant era. Yet, who would doubt that there are principals of love, equity, and a concern for social justice that can be drawn from such a law? Does the fact that one can derive principles from a law make that law a creation ordinance, or somehow universally moral? I don’t think so,
Barcellos’ response is very helpful:
What you are describing in your comment is the concept of general equity as it applies to old covenant judicial laws. The equity that an old covenant judicial law might possess does not come from the particular old covenant judicial law itself, however. It is simply an application of moral/natural/universal law to Israel’s unique, covenantally conditioned national life. So, there may be principles in particular old covenant judicial laws (you mentioned “love, equity, and a concern for social justice”) that transcend the old covenant. I agree with you on this. But the temporary law you mentioned does not establish what constitutes equity, it is a unique illustration/application of it. Hence, the equity predates and even transcends the old covenant.