But the Apostle goes on from what is merely theistic, to what is distinctively Christian. "Ye turned to God from idols ... to wait for His Son from heaven, whom He raised from the dead." This is a very summary description of the issue of Christian conversion. Judging by the analogy of other places, especially in St. Paul, we should have expected some mention of faith. In Acts xx., _e.g._, where he characterises his preaching, he names as its main elements, repentance toward God and faith toward our Lord Jesus Christ. But here faith has been displaced by hope; the Thessalonians are represented not as trusting in Christ, but as waiting for Him. Of course, such hope implies faith. They only waited for Him because they believed He had redeemed them, and would save them at the great day. If faith and hope differ in that the one seems to look mainly to the past and the other to the future, they agree in that both are concerned with the revelation of the unseen. Everything in this revelation goes back to the resurrection and rests upon it. It is mentioned here, in the first instance, exactly as in Rom. i. 4, as the _argumentum palmarium_ for the Divine Sonship of Jesus. There are many proofs of that essential doctrine, but not all can be brought forward in all circumstances. Perhaps the most convincing at the present time is that which is drawn from the solitary perfection of Christ's character; the more truly and fully we get the impression of that character, as it is reflected in the Gospels, the surer we are that it is not a fancy picture, but drawn from life; and that He whose likeness it is, stands alone among the sons of men. But this kind of argument it takes years, not perhaps of study, but of obedience and devotion, to appreciate; and when the apostles went forth to preach the gospel they needed a more summary process of conviction. This they found in Christ's resurrection; that was an event standing alone in the world's history. There had been nothing like it before; there has been nothing like it since. But the men who were assured of it by many infallible proofs, did not presume to disbelieve it because of its singularity; amazing as it was, they could not but feel that it became one so unique in goodness and greatness as Jesus; it was not possible, they saw after the event, that He should be holden by the power of death; the resurrection only exhibited Him in His true dignity; it declared Him the Son of God, and set Him on His throne. Accordingly in all their preaching they put the resurrection in the forefront. It was a revelation of life. It extended the horizon of man's existence. It brought into view realms of being that had hitherto been hidden in darkness. It magnified to infinity the significance of everything in our short life in this world, because it connected everything immediately with an endless life beyond. And as this life in the unseen had been revealed in Christ, all the apostles had to tell about it centred in Him.