Tithing Refund? Really?

The famous WIllow Creek Church has hired the charlatan Robert Morris to teach the people to tithe (10%) of their gross income for a year, after which if they are not satsified with the returns, he will refund their tithes. This is one of the most shameless forms of false teaching in the churches today. It is a lie. It is theft. Don't believe it. Tithing under threat of a curse, as taught by these people, is a back door denial of the sufficiency of the atoning work of Christ.