John Chrysostom

Mark, how he knits it all together, and represents Him at one time, as holding down the whole body from above, and welding it together; at another time, as supporting the building from below, and being, as it were, a root, or base. And whereas he had used the expression, "He created in Himself of the twain one new man;" by this he clearly shows us, that by Himself Christ knits together the two walls: and again, that in Him it was created. And "He is the first-born," saith he, "of all creation," that is, He Himself supports all things.

Whether you speak of the roof, or of the walls, or of any other part whatsoever, He it is supports the whole. Thus he elsewhere calls Him a foundation. "For other foundations," saith he, "can no man lay than that which is laid, which is Jesus Christ." "In whom each several building," he saith, "fitly framed together." Here he displays the perfectness of it, and indicates that one cannot otherwise have place in it, unless by living with great exactness.