help needed

I am currently working on a post about my fave books. As a P (perceptive type, see blogs on Myers Brigg) making decisions about what to put in the list is taking time, so in the meanwhile here is a boring blog for you, but good for me...

Please help me on a debate I am in at church on tithing on friday - I am meant to be pro. As a very non legalistic person, this is hard - I keep thinking of anti arguments. I am thinking of defining tithing not as a tenth but more generally as a systematic practice of giving - is this legit? and any arguments for me????

btw, as a P, taking sides in such a definite way as you do in debating is quite hard!