Torah teaches that the tithe was paid in 6 of 7 years on crops, but NO TITHE WAS PAID in the 7th year. Funny how most Christian pastors do not instruct their flock to take a break from tithing every 7th year.
In every 7 year cycle, there was a tithe paid in the 3rd and 6th year (some say only the 3rd year) that was different from what was paid in the 1st, 2nd, 4th and 5th years of every 7 year cycle. The only time I've heard a Christian pastor talk about this was when they more or less tell their flock , "Israel paid 2 tithes, so you need to give 20% of your income to your church, not 10%." In reality, one of those tithes was only paid 2 of 7 years, no tithe was paid 1 of 7 years, so even if you applied this by analogy to cash, it would only come out to 8.6% (or 11.4%) of your income depending on whether you go with the interpretation that the "Second Tithe" was paid INSTEAD OF or IN ADDITION TO the first tithe paid in the other years.
But the First Tithe has many elements to it that are different from the Second Tithe. God chooses who uses the first tithe and how it's given, but the giver chooses who uses the second tithe and how it's given. The giver of the tithe consumes about half the tithe, consuming about eleven-twelths of the first tithe and gave away most of the second tithe. If you don't understand where that math comes from, then you probably need to click on www.messiahalive.com/torah.htm today and find out.