28:1-14 This chapter is a very large exposition of two words, the blessing and the curse. They are real things and have real effects. The blessings are here put before the curses. God is slow to anger, but swift to show mercy. It is his delight to bless. It is better that we should be drawn to what is good by a child-like hope of God's favour, than that we be frightened to it by a slavish fear of his wrath. The blessing is promised, upon condition that they diligently hearken to the voice of God. Let them keep up religion, the form and power of it, in their families and nation, then the providence of God would prosper all their outward concerns.

12. The Lord shall open unto thee his good treasure—The seasonable supply of the early and latter rain was one of the principal means by which their land was so uncommonly fruitful.

thou shalt lend unto many nations, and thou shalt not borrow—that is, thou shalt be in such affluent circumstances, as to be capable, out of thy superfluous wealth, to give aid to thy poorer neighbors.