Isaiah 28:16 therefore thus says the Lord God,
“Behold, I am the one who has laid as a foundation in Zion,
a stone, a tested stone,
a precious cornerstone, of a sure foundation:
‘Whoever believes will not be in haste.’
What is this foundation? 1 Peter 2:6 tells us that the cornerstone is the Messiah, Jesus Christ. He is our foundation and only with a secure, stable foundation can anything lasting be built. Anything “added on” to the house, not built upon the foundation, is sure to end up in wreckage. Remember the story Jesus told about the wise man building his house upon the rock. It endured the storms of life. What happened to the foolish man who built on a foundation of sand? Disaster!
Who lays this stone? Behold, I lay in Zion. It is God’s work. We can’t provide the right kind of foundation for our lives, but God can lay a foundation for us.
Jesus is precious, and a cornerstone. The cornerstone provides the lines, the pattern for all the rest of the building. The cornerstone must be straight and true, and everything in the entire building lines up in reference to the cornerstone. If the cornerstone is defective in anyway, if the line is off by a tiny angle, the whole building will be wrong.
Notice, too, that Jesus is a sure foundation, and we can build everything on Him without fear. We can trust Him. He is 100% reliable.