We have already noted that in the previous verses the Apostle is beginning to prepare for closing his letter, but is carried away into the long digression of which our text forms the beginning. The last words of the former verse open a thought of which his mind is always full. It is as when an excavator strikes his pickaxe unwittingly into a hidden reservoir and the blow is followed by a rush of water, which carries away workmen and tools. Paul has struck into the very deepest thoughts which he has of the Gospel and out they pour. That one antithesis, 'the loss of all, the gain of Christ,' carried in it to him the whole truth of the Christian message. We may well ask ourselves what are the subjects which lie so near our hearts, and so fill our thoughts, that a chance word sets us off on them, and we cannot help talking of them when once we begin. The text exemplifies another characteristic of Paul's, his constant habit of quoting his own experience as illustrating the truth. His theology is the generalisation of his own experience, and yet that continual autobiographical reference is not egotism, for the light in which he delights to present himself is as the recipient of the great grace of God in pardoning sinners. It is a result of the complete saturation of himself with the Gospel. It was to him no mere body of principles or thoughts, it was the very food and life of his life. And so this characteristic reveals not only his natural fervour of character, but the profound and penetrating hold which the Gospel had on his whole being. In our text he presents his own experience as the type to which ours must on the whole be conformed. He had gone through an earthquake which had shattered the very foundations of his life. He had come to despise all that he had counted most precious, and to clasp as the only true treasures all that he had despised. With him the revolution had turned his whole life upside down. Though the change cannot be so subversive and violent with us, the forsaking of self-confidence must be as real, and the clinging to Jesus must be as close, if our Christianity is to be fervid and dominant in our lives. I. The treasures that were discovered to be worthless. We have already had occasion in the previous sermon to refer to Paul's catalogue of 'things that were gain' to him, but we must consider it a little more closely here. We may repeat that it is important for understanding Paul's point of view to note that by 'flesh' he means the whole self considered as independent of God. The antithesis to it is 'spirit,' that is humanity regenerated and vitalised by Divine influence. 'Flesh,' then, is humanity not so vitalised. That is to say, it is 'self,' including both body and emotions, affections, thoughts, and will.