“Bring the whole tithe into the treasure-house, that there may be food in my house, and prove me now herewith, saith Jehovah of hosts, if I open not to you the windows of the heavens, and pour you out a blessing, till there be no place for it.”—Malachi 3:10, Da.
... The prophecy setting out the rule was given twenty-four centuries ago through the Hebrew prophet Malachi in these words: “‘Bring the whole tithe into the storehouse, that there may be food in my house, and test me now in this way,’ says the LORD [Jehovah] of hosts, ‘and see if I will not open for you the windows of the heavens, and pour out for you a blessing until there is no more need.’”—Mal. 3:10, AT.