Is it permissible to tithe? Not only is it permissible, I would strongly recommend and urge you to do so. In choosing to give 10% of our income to the Lord, we are honoring a God-given, Old Testament principle. In the absence of a prescribed percentage for giving in the New Testament, why not adopt the Old Testament pattern? This does not mean you are sinning if you don’t. To give only 8% or to give 12% is equally permissible. Not to give at all, or to give disproportionately to your income (which is the case with most Christians today), or to give grudgingly, is indeed sin. Let us be joyful and generous in our giving. After all, everything we own belongs to God anyway!