I do like the concept of the later parts of the Bible overriding the earlier parts where they contradict. "Thou shall kill an homosexual, for it is an icky thing" gets overridden by "Thou shalt not kill" and "Love thy neighbour as thyself". So my colleague with the lisp gets to live.
I suppose it fits with the RC doctrine of saying "sorry" just before you die and being forgiven, though.
I also am with the Christians on the fact that it is kind of pointless to pick up on figures of speech and claim that they render the whole book meaningless. When Jesus said "I will make you fishers of men" I don't pretend that he was going to give them nets and rods and make them convince people to eat worms with hooks in them.
It is similarly pointless to pick on details like Jesus saying that a mustard seed was the smallest seed in the world, when we know it's not. That's how you had to talk to people 2,000 years ago.
Having said that, there is an awful lot of bollocks in the Old Testament. It would probably be better for any Christian church to just quietly drop that one.