He begins by reminding them that to that gospel they owed all _their knowledge and hope of heaven_--the hope "whereof ye heard before in the word of the truth of the gospel." That great word alone gives light on the darkness. The sole certainty of a life beyond the grave is built on the Resurrection of Jesus Christ, and the sole hope of a blessed life beyond the grave for the poor soul that has learned its sinfulness is built on the Death of Christ. Without this light, that land is a land of darkness, lighted only by glimmering sparks of conjectures and peradventures. So it is to-day, as it was then; the centuries have only made more clear the entire dependence of the living conviction of immortality on the acceptance of Paul's gospel, "how that Christ died for our sins according to the Scriptures, and that He was raised again the third day." All around us, we see those who reject the fact of Christ's resurrection finding themselves forced to surrender their faith in any life beyond. They cannot sustain themselves on that height of conviction, unless they lean on Christ. The black mountain wall that rings us poor mortals round about is cloven in one place only. Through one narrow cleft there comes a gleam of light. There and there only is the frowning barrier passable. Through that grim canyon, narrow and black, where there is only room for the dark river to run, bright-eyed Hope may travel, letting our her golden thread as she goes, to guide us. Christ has cloven the rock, "the Breaker has gone up before" us, and by His resurrection alone we have the knowledge which is certitude, and the hope which is confidence, of an inheritance in light. If Paul's gospel goes, that goes like morning mist. Before you throw away the "word of the truth of the gospel," at all events understand that you fling away all assurance of a future life along with it.
Then, there is another motive touched in these words just quoted. The gospel is a word of which the whole substance and content is truth. You may say that is the whole question, whether the gospel is such a word? Of course it is; but observe how here, at the very outset, the gospel is represented as having a distinct dogmatic element in it. It is of value, not because it feeds sentiment or regulates conduct only, but first and foremost because it gives us true though incomplete knowledge concerning all the deepest things of God and man about which, but for its light, we know nothing. That truthful word is opposed to the argumentations and speculations and errors of the heretics. The gospel is not speculation but fact. It is truth, because it is the record of a Person who is the Truth. The history of His life and death is the one source of all certainty and knowledge with regard to man's relations to God, and God's loving purposes to man. To leave it and Him of whom it speaks in order to listen to men who spin theories out of their own brains is to prefer will-o'-the-wisps to the sun. If we listen to Christ, we have the truth; if we turn from Him, our ears are stunned by a Babel. "To whom shall we go? Thou hast the words of eternal life."
Further, this gospel had been already received by them. Ye _heard before_, says he, and again he speaks of the gospel as "come unto" them, and reminds them of the past days in which they "heard and knew the grace of God." That appeal is, of course, no argument except to a man who admits the truth of what he had already received, nor is it meant for argument with others, but it is equivalent to the exhortation, "You have heard that word and accepted it, see that your future be consistent with your past." He would have the life a harmonious whole, all in accordance with the first glad grasp which they had laid on the truth. Sweet and calm and noble is the life which preserves to its close the convictions of its beginning, only deepened and expanded. Blessed are they whose creed at last can be spoken in the lessons they learned in childhood, to which experience has but given new meaning! Blessed they who have been able to store the treasure of a life's thought and learning in the vessels of the early words, which have grown like the magic coffers in a fairy tale, to hold all the increased wealth that can be lodged in them! Beautiful is it when the little children and the young men and the fathers possess the one faith, and when he who began as a child, "knowing the Father," ends as an old man with the same knowledge of the same God, only apprehended now in a form which has gained majesty from the fleeting years, as "Him that is from the beginning." There is no need to leave the Word long since heard in order to get novelty. It will open out into all new depths, and blaze in new radiance as men grow. It will give new answers as the years ask new questions. Each epoch of individual experience, and each phase of society, and all changing forms of opinion will find what meets them in the gospel as it is in Jesus. It is good for Christian men often to recall the beginnings of their faith, to live over again their early emotions, and when they may be getting stunned with the din of controversy, and confused as to the relative importance of different parts of Christian truth, to remember _what_ it was that first filled their heart with joy like that of the finder of a hidden treasure, and with what a leap of gladness they first laid hold of Christ.