As far as I am concern, biblically it is very
worng. For God sake, it is wrong biblically
and my reason is becos it is expressly
stated in the bible, that no one should add
to the word which I am commanding you,
nor take away from it, that you may keep
the commandments of the LORD your God
which I command you.
So this concept of adding or subtracting
from the normal 10% tithe is biblically
wrong. To me, it is like adding or
subtracting from God words. Leave it the
way it is.. The standard is 10% nothing
more and nothing less. Pay your normal
10%... Very soon, like I said, this doctrine
will be pass and many gullible follower will
download hook line and sinker!
You can read Deuteronomy

source: www.completetechupdate.com.ng/2017/12/profitable-niche-top-4-paying-niches.html?m=1

Thank you