For Religious Group, True Charity Begins onOn Operating Table - WSJ.com

So a small supposedly Christian sect has as one of it's practices donating their extra kidney to those who need it. The linked WSJ article doesn't give their theological explanation for this practices, so I've been wondering about the Biblical explanation for kidney donation. From the article: "The Jesus Christians were founded in 1982 by David McKay, a 62-year-old native of Rochester, N.Y., who moved to Australia in 1967. The Jesus Christians expect members to turn over their savings to the group and to forsake family, friends and possessions. "We're people who have strong Christian ideals and are prepared to do outrageous things to express our love for God and others," Mr. McKay says."