Piper on order of regeneration and faith

John Piper talks in this video excerpt about the order in which new birth (regeneration) and faith come. John Murray writes about this in great detail (as well as other elements in the chain from regeneration up to glorification in his book, Redemption Accomplished and Applied. This may seem unimportant, but it seems to me that understanding what the Bible says about how someone get's saved is perhaps one of the most important things to understand in the universe.