I recently heard a sermon on tithing at a Reformed Baptist Church, where I have applied for membership.
The pastor made it clear that we are all to tithe because that's what God wants us to do. He said, if we don't give generously of our finances that God will not bless us.
He presented many Bible verses showing that it is Biblical and that God expects us to obey it.
We can't claim to be believers, then only pick and choose the parts of the Bible that suit our lifestyle and ignore the parts we don't like.
Below is a link listing 20 Bible verses showing that tithing is something all of Gods people must do if we are to be obedient to His Word
https://echurch.com/20-bible-verses-about-tithing/
I know that nobody will argue with Gods Word, so this is only a reminder of our obligation to tithe. I will say in advance that anyone who tries to argue against it is arguing against sound Biblical teaching
I can tell you that I personally tithe and am 100% convinced that it is the right thing to do. There are many people who argue that it is not new covenant. I am not one of them.
You do not tithe in order to increase, you do not give sacrifice in order to receive abundance from God, you give to God to honor Him who gave to you in the first place. You give to God out of the abundance that He has already given to you. You give to God to put your faith in action, to "put your money where your mouth is".
Remember, we are told that "faith without works is dead". If you claim to love God, yet are unwilling to give of yourself to Him, just how unselfish is your love? We are to be the "bride of Christ", yet think of this, if you claim to love your spouse, yet in all that you do, you only think of yourself, the relationship will never blossom to it's full potential.
I tithe upon my increase. Let me explain, I am in business and have many dollars that come in each month and many dollars that go out each month. Some of the dollars "stick", they are my "increase", this is what I tithe upon. When I used to work for an employer, I would tithe upon my pay check. Since my gross income was not an increase, but my net income was, I personally tithed based upon my net income. My mentor chose to tithe based upon his gross income.
So, to relate to where you are. When I sell a house and receive say $25,000 at the closing of the sale. I then go through and figure how much of that $25,000 is profit. Let's say here that $17,000 is profit. Now I figure what my tax burden is on that $17,000, let's say here that it is $3,000. That makes my INCREASE $14,000. I then thank God who gave this abundance to me and grinning from ear to ear, I write a tithe check to my local storehouse (my church) for $1,400 and then rejoice for the $12,600 that I have to enjoy!
I know that not everybody does it the way that I do. I do not believe that tithing is a requirement to get to heaven.
I do believe that tithing is a requirement to increase your relationship with God.
Faith in action is a very powerful thing.
God bless you!
Mike