I think I've quoted this before somewhere, a few words from the philosopher John Stuart Mill.......To say that God's goodness may be different in kind from man's goodness, what is it but saying, with a slight change of phraseology, that God may possibly not be good?
Picking up on the working on the sabbath, certainly this is a very unsavory view of Deity, and personally I would not seek to defend it. (Those who would seek to do so, let them go ahead.) But leading on from this, there is the incident during the life of Jesus when his disciples were seen picking ears of corn on the sabbath by the ardent religionists of His own day. They condemned the disciples, as you would I suppose, having studied the OT as they would have done. Jesus tells them that one greater than the sabbath was now before them, and that I will have mercy, and not sacrifice.
So we have a God who orders the death of those who would break His laws, who then Incarnates and condemns those who seek to keep to them to the best of their abililty. No doubt, with the great gift of hindsight, we see ourselves as acknowledging that which is greater than the sabbath and seeing with clear eyes that The sabbath was made for man, and not man for the sabbath. Yet, with all the proof texting that goes on with the NT these days among certain of the faithful, it would seem sometimes, at least to me, that it would only be hindsight, and hindsight alone, that would enable them to do so. So often a single verse is enough to condemn the gays, or a host of others who are not up to their own exhalted standards of "morality".
Christ ended the episode by asking for mercy, not sacrifice. That , at least for me, is where the "zangness" enters into the equation!