Jesus Christ himself being the chief corner-stone, in whom all the building fitly framed together, groweth unto an holy temple in the Lord; as it ought to be the principal concern of all who have not sitten down on this side of Jordan to satisfy their souls (once created for, and in their own nature requiring, in order to satisfaction, spiritual, immortal, and incorruptible substance,) with husks prepared for beasts, to be built in and upon this corner-stone, for an habitation of God, through the Spirit; so it ought to be the main design and work of such as would be approven of God as faithful labourers and co-workers with God, to be following the example of him who determined not to know anything among those he wrote unto, save Jesus Christ and him crucified.  O! this noble, heart-ravishing, soul-satisfying mysterious theme, Jesus Christ crucified, the short compend of that uncontrovertibly great mystery of godliness, God manifest in the flesh, justified in the spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory, wherein are things the angels desire to look unto, or with vehement desire bend, as it were, their necks, and bow down their heads to look and peep into, (as the word used, I Pet. i. 12, importeth) is a subject for angelical heads to pry into, for the most indefatigable and industrious spirits to be occupied about.  The searching into, and studying of this one truth, in reference to a closing with it as our life, is an infallible mark of a soul divinely enlightened, and endued with spiritual and heavenly wisdom; for though it be unto the Jews a stumbling-block, and to the Greeks foolishness, yet unto them who are called, it is Christ the power of God, and the wisdom of God, because the foolishness of God is wiser than men, and the weakness of God is stronger than men.  O what depths of the manifold wisdom of God are there in this mystery!  The more it is preached, known, and believed aright, the more it is understood to be beyond understanding, and to be what it is—­a mystery.  Did ever any preacher or believer get a broad look of this boundless ocean, wherein infinite wisdom, love that passeth all understanding, grace without all dimensions, justice that is admirable and tremendous, and God in his glorious properties, condescensions, high and noble designs, and in all his perfections and virtues, flow over all banks; or were they ever admitted to a prospect hereof in the face of Jesus Christ, and were not made to cry out, O the depth and height, the breadth and length!  O the inconceivable, and incomprehensible boundlessness of all infinitely transcendent perfections!  Did ever any with serious diligence, as knowing their life lay in it, study this mysterious theme, and were not in full conviction of soul, made to say, the more they promoved in this study, and the more they descended in their divings into this depth, or soared upward in their mounting speculations in this height, they