Bible on the origin of Tithes

Joshua 13:14 – Only unto the tribes of Levi he gave none inheritance; the sacrifices of the Lord God of Israel made by fire are their inheritance, as he said unto them.

1. God separated one of the twelve tribes of Israel to serve Him.
2. He commanded that no inheritance of the land of Canaan should be given to the tribe.
3. Their inheritance was to be tenth of the income of the other 11 tribes.
4. The tribe of Levites were servants of the Lord.
5. They were full time workers in the Sanctuary, and tithes were to be their income.