[JoeFromSidney]

Years ago I decided to try tithing after taxes. I've followed that practice for at least sixty years. I can't really prove that the good things in my life have come because I tithed. It's not like an experiment in physics or chemistry where you can trace the causality. Nevertheless, I'm satisfied that it has made a difference. You can't outdo God in generosity.

[Idaho_Cowboy]

I can't really prove that the good things in my life have come because I tithed.

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I think the gospel teaches the good things in life come because of Grace. But God in his grace certainly seems to reward an obedient heart. I always figured the after taxes was ok since God said to tithe on the increase (Deuteronomy 14:22 and other places), but I reckon that's up to the conscience of the individual.