And in His life, in the history of His death and resurrection, is the only foundation for any real knowledge of the awful mysteries that lie beyond the grave. He is the Alpha from whom all truth must be deduced, the Omega to which it all leads up. Certitude is in Him. Apart from Him we are but groping amid peradventures. If we _know_ anything about God it is due to Jesus Christ. If we _know_ anything about ourselves it is due to Him. If we _know_ anything about what men ought to do, it is because He has done all human duty. And if, into the mist and darkness that wraps the future, there has ever travelled one clear beam of insight, it is because He has died and risen again. If we have Him, and ponder upon the principles that are involved in, and flow from, the facts of His life and death, then we know; and 'the truth as it is in Jesus' is the truth indeed. To possess Him is to hold the key to all mysteries, and knowledge without Him is but knowledge of the husk, the kernel being all unreached. That Stone is the foundation on which the whole stately fabric of man's knowledge of the highest things must ever be reared. He is the foundation of all restful love. A Czar of Russia, in the old days, was mad enough to build a great palace upon the ice-blocks of the Neva. And when the spring came, and the foundations melted, the house, full of delights and luxury, sank beneath the river. We build upon frozen water, and when the thaw comes, what we build sinks and is lost to sight. Instead of love that twines round the creature and trails, bleeding and bruised, along the ground when the prop is taken away, let us turn our hearts to the warm, close, pure, perfect changeless love of the undying Christ, and we shall build above the fear of change. The dove's nest in the pine-tree falls in ruin when the axe is laid to the root. Let us build our nests in the clefts of the rock and no hand will ever reach them. Christ is the foundation on which we may build an immortal love.