Now what this that builds us up is, I have already said--namely, faith, whereby we are laid on Christ, and repose our trust upon this stone, and thus become like Him; and then this also must follow, that the building must be fitted one part to the other, for the other stones must all be laid and placed upon this stone. That is, of course, that love is a fruit of faith. But why does the prophet call Him a foundation stone? For this reason: that no man can build a house except he lay one stone first as a foundation, for the other stones in the building cannot stand except on the foundation stone. So we must all of us rest on Christ, and confess Him for a foundation stone. Therefore we are not to pride ourselves that the stone must receive something from us, but we must receive blessing from it alone; for we do not bear it up, but it bears us up, and upon Him lies sin, death, hell, and all that we have to bear. So that all this--and whatever jars against us--cannot injure us if we have been placed on this foundation. For if we remain resting on him, and leave ourselves upon Him, we must then remain where He is; just as natural stones must be left on their foundation stone. Besides, the prophet calls Him a corner stone. The Holy Spirit has a way of His own of saying much in few words. Christ is a corner stone because he has brought Gentiles and Jews together who were at dead enmity one with another, and thus the Christian Church has been gathered of both classes, whereof the Apostle Paul writes largely. The Jews gloried in the law of God, and that they were God's people, and so despised the heathen. But now Christ has come, has taken away their boasting from the Jews, and called us who were Gentiles; and thus he has made us both one, by one faith, and He has so dealt with us that we both must confess that we have nothing of ourselves, but are all sinners, and only must expect righteousness and heaven from Him, and that we Gentiles may as justly claim that Christ has come to help us, as the Jews; wherefore He is the corner stone that joins both together in one, so that it becomes one building and one house.