What does Deuteronomy 28:12 mean?

He'll open up his storehouses in the sky and send rain when you need it, and he'll bless everything you do. You'll lend to other nations, but you won't need to borrow from anyone. Deuteronomy 28:12 - Modern Text Bible

(God promises both material provision and financial security, making Israel a source of help rather than needing help themselves.)