Malachi 3:6-9

“For I am the LORD, I do not change [but remain faithful to My covenant with you]; that is why you, O sons of Jacob, have not come to an end. “Yet from the days of your fathers you have turned away from My statutes and ordinances and have not kept them. Return to Me, and I will return to you,” says the LORD of hosts. “But you say, ‘How shall we return?’ “Will a man rob God? Yet you are robbing Me! But you say, ‘In what way have we robbed You?’ In tithes and offerings [you have withheld]. You are cursed with a curse, for you are robbing Me, this whole nation! [Lev 26:14-17]