Scholar and early Christian theologian, Author
“How then is our righteousness abounding more than that of the Scribes and Pharisees, if they dare not taste the fruits of their land before they offer first-fruits to the priests, and tithes are separated for the Levites; whilst I, doing none of these things, so misuse the fruits of the earth that the priest knows nothing of them, the Levite is ignorant of them, the divine altar does not perceive them”
“A Dictionary of Christian Antiquities” p.118, 1880
See also https://www.amazon.com/Homilies-Numbers-Ancient-Christian-Texts/dp/0830829059 (pages 52-54)
Origen describes what would be the fulfillment of first fruits and tithing as the harvesting of souls.