'Tithe' in the Bible

"Will a person rob God? Yet you are robbing me! But you ask, "How are we robbing you?' "By the tithe and the offering.

"Bring the entire tithe into the storehouse that there may be food in my house. So put me to the test in this right now," says the LORD of the Heavenly Armies, "and see if I won't throw open the windows of heaven for you and pour out on you blessing without measure.