What does Malachi 3:10 mean?

Bring the full amount of your tithes into the storehouse, so there's enough food in my house. Test me in this, says the Lord. See if I don't open the windows of heaven and pour out so much blessing you won't have room for it. Malachi 3:10 - Modern Text Bible

(God challenges them to trust Him by giving generously, promising that He'll respond with overwhelming blessing.)