There are many promises which God promised to fulfill if we trust in Him.
This is one of them, IF you give ten percent of your income to support His house, the church, He will give you so much that you will not have enough room for it. Check it out.
Malachi 3:10 “Bring the whole tithe into the storehouse, that there may be food in my house. Test me in this,” says the LORD Almighty, “and see if I will not throw open the floodgates of heaven and pour out so much blessing that there will not be room enough to store it.”
I suggest that you try God on this one.
I make giving my living but God always beats me on giving. My life is overflowing with His Grace.