There is no epistle in the New Testament which gives so little space to the development of doctrine as this to the Philippians. Need it be said that it has not the less its own proper office on that account? And what is this but the unfolding of the truth in the heart and in the ways of the Christian? Hence it is that, although doctrine is sparse, if not almost excluded, nevertheless what little appears comes in as ancillary to the main purpose. It is interwoven with practical appeal, and indeed the chief development of doctrine (namely, in the second chapter) forms a ground of exhortation.