Tithing is an Old Covenant Law, but rarely mentioned after the Resurrection of Jesus. The New Covenant grace is faith to become a generous giver; not to fulfill a legal requirement of 10 percent.
In a debate, if we do not agree on what is truth or how to discover truth and how to determine what truth is, how can we ever decide who is right and who is wrong? If I say, “Truth derives from God’s revealed Word,” but you say, “All truths are relative and depend upon the individual… whatever a person believes is true for them,” then how can we ever agree on anything? Will we not be talking past one another? “Can two walk together, unless they are agreed?” Amos 3:3, NKJV.