Originally Posted by Charles Baudelaire
Okay, to me, it's actually very simple. Ask him these questions, if you want:
1. Are you a Christian?
2. Who's the most important person to Christians?
3. So, Christ is more important than, say, Matthew?
4. How about Peter? Paul?
5. How about Abraham? Moses?
I am assuming that he will say "Yes" to #3-5. If he does, then ask him why Christ is more important than all of them.
6. So, if Abraham said X and Christ said Y, which one should a good Christian follow?
7. So, if the Old Testament said "An eye for an eye," and Christ said, "Turn the other cheek," which should I do?
By then, you have him boxed into a corner: you have him admitting that a central tenet of the Old Testament's law (an eye for an eye) is superseded by the Christian idea of "turn the other cheek." You have Christ being more important that Abraham and Moses, and that logically includes anyone of lesser importance...like Isaiah, whom I believe was the attributed author of Proverbs.
So, at this point, you get to move in for the coup de grace:
9. How hard did Mary spank Jesus?
If he argues that Jesus never misbehaved, bring up the fact that Jesus ran off from his parents and hung out in the Temple until they were frantic.
10. Would Jesus spank?
That should get him. Bottom line, if you're a Christian, you do as Christ does, or you try to. Otherwise, you're not really a Christian. You're a Testamentarian, or some other such thing, but you're not a CHRIST-ian.
As Christians we are bound to follow Christ over any Old Testament laws or sayings.