Therefore thus says the Lord GOD,
Behold, I lay in Zion for a foundation a stone, a tested stone, a precious cornerstone, a sure foundation: he that believes shall not be in haste.
All Commentaries on Isaiah 28:16 Go To Isaiah 28
Jerome
AD 420
This cornerstone joins together both walls and restores two peoples to unity, concerning which God said through Isaiah: “Behold, I will lay a cornerstone in Zion as its foundation, elect and precious; the one who believes in it will not be ashamed.” It was his will to build further upon this cornerstone and other cornerstones, so that the apostle Paul would be able to say boldly, “built upon the foundation of the apostles and the prophets, with Jesus Christ himself being the chief cornerstone.”