Bring ye the whole tithe into the store-house, that there may be food in my house, and prove me now herewith, saith Jehovah of hosts, if I will not open you the windows of heaven, and pour you out a blessing, that there shall not be room enough [to receive it].
Malachi 3:8 Will a man rob God? yet ye rob me. But ye say, Wherein have we robbed thee? In tithes and offerings.
Malachi 3:9 Ye are cursed with the curse; for ye rob me, even this whole nation.
Malachi 3:10 Bring ye the whole tithe into the store-house, that there may be food in my house, and prove me now herewith, saith Jehovah of hosts, if I will not open you the windows of heaven, and pour you out a blessing, that there shall not be room enough [to receive it].
Malachi 3:11 And I will rebuke the devourer for your sakes, and he shall not destroy the fruits of your ground; neither shall your vine cast its fruit before the time in the field, saith Jehovah of hosts.
Malachi 3:12 And all nations shall call you happy; for ye shall be a delightsome land, saith Jehovah of hosts.
The verse centers on "windows of heaven", "bring", "whole", "tithe", "store-house", "food", "prove", and "herewith". It is saying that the verse draws attention to "windows of heaven" and "bring", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 9's "Ye are cursed with the curse for..." into verse 11's "And I will rebuke the devourer for...", so "windows of heaven" and "bring" belong inside that flow. In Return to the LORD in Covenant Faithfulness, the local focus is covenant faithfulness, divine mercy, and judgment.
A plain takeaway is to answer the verse's own emphasis on "windows of heaven" and "bring" with trust shaped by these words, not by a vague optimism outside the passage.