We . . . glory in Christ Jesus. Philippians 3:3

Consider the excellencies of the knowledge of Christ. The comfort of believers are streams from this fountain. Jesus Christ is the object of a believer's joy. Take away the knowledge of Christ, and Christians would be the most sad and melancholy beings in the world.

Let Christ but manifest himself, and dart the beams of his light into their souls, and it will make them kiss the stake, sing in the flames, and shout in the pangs of death, as men that divide the spoil. We can perform no duty, enjoy no comfort, nor can we be saved without it (John 17:3). If it is life eternal to know Christ, then it is eternal damnation to be ignorant of Christ. Christ is the door that opens heaven, and knowledge is the key that opens Christ. It is profound; all other sciences are but shadows; this is a boundless, bottomless ocean; no creature has a line long enough to fathom its depths, there is height, length, depth, and breadth ascribed to it (Eph. 3:18), yea, it passes knowledge.

Eternity itself cannot fully unfold him. It is like exploring a newly discovered land; by degrees you search further and further into the heart of the country. Ah, the best of us are yet on the borders of this vast continent! The study of Jesus Christ is the noblest subject that ever a soul spent itself upon. The angels stoop to look into this deep abyss. The truths discovered in Christ are the secrets that from eternity lay hid in the bosom of God. Studying Christ stamps a heavenly glory upon the contemplating soul. How little do we know of Christ, in comparison with what we might have known? O, how much time is spent in other studies and worldly employments; but how little in the search and study of Jesus Christ? O then, separate,devote, and wholly give yourself, your time, and your strength to this most sweet, transcendent study.

John Flavel, The Fountain of Life, pp. 13-19