Excellent post.
Each one must give as he has decided in his heart, not reluctantly or under compulsion, for God loves a cheerful giver.
Scripture sums it up well. Plus, nowhere in that does it say $ = giving. What we give, $ or otherwise, is between us and God. I think I’m properly interpreting scripture here, but if someone disagrees, I’d like to hear their point of view.
Actually, tithing is addressed in part in the New Testament:
“Woe to you, teachers of the law and Pharisees, you hypocrites! You give a tenth of your spices—mint, dill and cummin. But you have neglected the more important matters of the law—justice, mercy and faithfulness. You should have practiced the latter, without neglecting the former.”
Mat 23:23
The larger lesson is that the Pharisees were meticulous about tithing, even to the minutia of the spices they received, but failed in the matter of righteousness in character.
The smaller issue often overlooked here is that Jesus is also saying to them “do not neglect to continue in your tithes” even with the expectation of holy and righteous living.