Malachi closes the Old Testament with a series of disputations: God says one thing, the people say another, and God answers. He confronts faithless priests, broken marriages, and stingy worship, then promises a coming messenger who will prepare the way of the LORD.
“For I am the LORD, I change not; therefore ye sons of Jacob are not consumed.”
“Bring ye all the tithes into the storehouse… and prove me now herewith, saith the LORD of hosts, if I will not open you the windows of heaven.”
“But unto you that fear my name shall the Sun of righteousness arise with healing in his wings; and ye shall go forth, and grow up as calves of the stall.”