Tithing
Tithing is a term used to mean setting aside a certain amount of one’s income for God.
Typically a tithe refers to a tenth of one’s income because the word means “tenth”. But any amount set aside for God is admissible.
“A tithe of everything from land, whether grain from the soil or fruit from the trees, belongs to the Lord: it is holy to the Lord.” Leviticus 27:30
Honor the Lord with your wealth, with the first fruits of all your crops; then your barns will be filled to overflowing, and your vats will brim over with new wine.
Proverbs 3:9-10