And observe how St. Peter quotes the expression, and shows the stone to signify Christ. Just as Isaiah had spoken of setting confidence upon Him, St. Peter likewise says, it is as much as trusting in Him; thus is Scripture truly explained. The builders lay the foundation stone where it may stand sure and firm, that it may bear up the whole building. So Christ, the living stone, bears up the whole building; and it is called the building, in order that we, bound one to another, may set our confidence and security on Him. V. 4. _Which indeed is rejected of men, but before God is elect and precious._ Here he brings forward a passage of the prophet David, in Ps. cxvii.: "The stone which the builders rejected has become the corner stone, and it is wonderful in our eyes." Which passage Christ also refers to in Mat. xxi. So Peter, in Acts iv., where he says: "This is the stone which ye builders rejected." Ye are builders, he says: for they taught the people, went about with great speeches, laid down many laws, but made mere work-saints and hypocrites. Then Christ comes and tells them, ye are hypocrites and broods of vipers; pronounces upon them many terrible judgments; judges them as sinners, and not as great saints, so that they could not endure it; they even reject Him--say to Him, "You are a heretic; do you caution that a man should not do good works? Ay! you must die." Therefore Peter says, here, this is the corner stone which indeed was rejected of men, whereon ye must be built by faith. This is now wonderful in our eyes, as the prophet says; it seems strange to us, and where the Spirit does not teach it, it is utterly incomprehensible. Therefore he says, in God's eyes the stone is elect, and an extremely precious stone; it is of great importance also that it takes away death, satisfies for sin, and rescues from hell, besides that it freely bestows heaven.