What’s tithing?
Who was the first person to tithe in the bible?
The 13 Tribes of Israel.
When and why did tithing become a law in the Old Testament?
Is it necessary for Christians under Grace to tithe?
WHAT’S TITHING?
Tithing = Tenth!
And all the tithe of the land, whether of the seed of the land or of the fruit of the tree, is the LORD’S: it is holy unto the LORD. ( Leviticus 27:30 ).

Tithe or Tenth is the proportion of a harvest dedicated for Religious purposes in the early days of Judaism.
Adams’ family made sacrifices to the Lord, but they never offered a tenth of their harvest unto the Lord.

WHO WAS THE FIRST PERSON TO TITHE IN THE BIBLE?
The very first person to tithe according to the records of the Bible is Abraham! Abraham offered a tenth of the spoils of war to Melchizedek, not under any compulsion by the law, nor because he wanted to be rich by paying tithes. Remember, he tithed from the spoils of war and not from his properties.
Genesis 14: 20:

Read more about this topic here: https://www.iyunadeblog.com/tithing/