Joel Olsteen and those like him, are scammers. The Bible does address tithing though. It is to be used to support the church, workers and ministries.
Read the Bible very carefully...tithing was ONLY the Israelites. The non-Israelite members of their households did not. Grain, oil, goats etc. were given to the temple. They NEVER gave money even though money existed.
The one and ONLY time Abraham gave a tithe was 10% of the spoils that he had taken from his enemies that he destroyed. HE did this ONE time only to thank God for him winning the fight..
There were grain/oil/sheep/goat tithes also taken to some of their festivals (I don't recall which ones and it is to late to look it up) they would bring it as a sacrifice but then after the ceremony they would eat it during the feast. It was just a big celebration meal. They were told if the location was very far away from their home they would just take enough money with them to PURCHASE the food items for the tithe when they arrived at the feast location. (They did not give the money!)
Tithes were NOT given of their yearly Gross like it is taught in the churches. It was 10% of the INCREASE from the previous year. Think of like our pay raises. If you got a pay raise 0f $3000 for 2019 you would tithe 10% of the $3000 Increase. JUST the one time, that one year, that you got that raise. You would not tithe on that 3K every year until you died. And you did Not tithe 10% of your 60K income.
In their terms...they had 200 sheep at the end of 2018. At end of 2019 they had 190 sheep left over after some died, traded some for money and they fed their family sheep all year long. So even though several sheep were born that year there was no increase. NO tithe required.
At the end of 2020 after some died, they traded some for money and fed their family sheep all year they had 290 sheep. They tithed 10% of the 100 sheep increase. The same applied to vats of oil and bushels of grain etc.
The 10% of our GROSS income EVERY year is a scam to support deacons, bishops, priests , popes, reverends, preachers, fathers, evangelists, the church support staff, expensive cathedrals and church buildings, that sit empty 90% of the time, because clergy only want to make a speech 1 or 2 times a week instead of get a real job.