First of all, why is tithing even an issue?
Let’s see:

This list can go on, but let’s get down to the nitty gritty. There is so much confusion and misinformation about tithing among Christians today.
It’s time that Christians discover the truth. The Bible says “the truth shall set you free.”
Ready to get free? Good. Here we go.
Here are 7 truths (facts) about tithing that Christians should know:
Recommended Reading: The Tithing Hoax
Christian Tithing: Separating Fact from Fiction
Bible Study Video: 3 Common Questions about Tithing Answered (Video)
What Does Malachi 3:10 Mean When It Says, "Bring ye all the tithes into the storehouse?"
Shouldn't Christians Tithe Since Jesus Mentions Tithing in the New Testament?
Biblical Tithing: Tithing is Abolished in the New Testament
Will Tithing Make Christians Wealthy or Debt-Free?
If Tithing is Not for Today's Christians Why Do Some Preachers Still Teach Tithing?