David Martyn Lloyd-Jones once said that Philippians 1:6 may very well be described as the fundamental (or key) verse to all of Paul’s letter to the church in Phillipi. He said it’s one of those “magnificent, fundamental, profound statements which lead us into the very depths of Christian doctrine and Christian theology.” In this verse we have a window into the Biblical teaching of salvation; the whole doctrine of salvation kind of compressed into just one little verse.