We're called to live on a circle in a square. A circle inside of a square is 79%. The math from the commands matches the illustration from agriculture. 2.5% is put in the hands of the Priest; then a tenth is given to the church; and a tenth for yourself, in the form of savings, but one third of that is given to the poor.
He doesn't want you just to go to heaven one day, he wants you to bring heaven to earth now. If your first fruits are in the right hands, your finances can't die. You sanctify everything else in your life by honouring the lord with your first fruits.
James 1.26 If anyone considers himself religious and does yet not keep a tight rein on his tongue, he deceives himself and his religion is worthless. Religion that our God our father accepts as pure and faultless is this; to look after orphans and widows in their distress. The religion our father sees as pure is generosity.
Keywords: Tithing, Tithe, Offerings, First Fruits, Terumah, Mishna, covenant of salt, Constantine, Savings, Giving, Charity, Tzedakah, Tsadaq, Tsidaqah, Ṣ'daqah, Sadacca, צדקה, Sadaqah