My take on the folks who want (everyone else) to follow the rules set down in Exodus and Leviticus for a bunch of iron-age nomads is basically "you first". (If they can coherently explain, without reference to the deity or the book, why these particular rules are "good" while the often-identical rules contained in Saudi-style sharia law are "bad", even better).

Christ was rather explicit on the whole heart and soul of the Christian religion boiling down to a few key things: give your life over to god, feed the hungry, house the homeless, clothe the naked, and un-isolate the socially isolated (visiting the sick and imprisoned is part of this process). That's the heart and soul of what he was teaching - and his perspective was the laws and the ceremonies were starting to get in the way of the worship.