2 Timothy 3:14-15
But continue you in the things which you have learned and have been assured of, knowing of whom you have learned them;…
Faith in Christ is the key which will unlock and give access to the treasures of saving wisdom which are laid up in the Old Testament. The Bible is an organised whole, and Christ and the Cross of Christ are wrought into the structure of it, although they do not always meet the eye. He who by faith sees "Christ and Him crucified" in the Scriptures is in immediate possession of the ground-plan of the holy volume. He will observe how the original promise respecting "the seed of the woman" was a germ of hope planted in the earth, which, by constant accretions from new prophecies and new types, had expanded itself into full blossom when the Virgin-born appeared to fulfil it. He will observe how, as the ages rolled away, the light of revelation grew brighter, and how the prophets, in the greater spirituality of their religious precepts, and the greater explicitness of their predictions, were many steps in advance of the law. He will observe how, from the sacrifice of Abel downwards, every victim which fell at the altar of Jehovah prefigured the great sacrifice of the death of Christ. And in reciting the Psalms he will feel that the Spirit of Christ, which was in those sweet psalmists of Israel, testified darkly beforehand of the sufferings of Christ and the glory which should follow. Thus the whole of Scripture is welded together in the counsel and design of God; and we know that, as regards man, that counsel and design is all bound up in one word — "Christ." He was "the Lamb slain" in the counsels of eternity "from the foundation of the world"; and accordingly in every chant of God's holy prophets, which have been since the world began, there has always been an undersong of Him, an undersong which may be caught by every spiritual ear.
Parallel VersesKJV: But continue thou in the things which thou hast learned and hast been assured of, knowing of whom thou hast learned them;