The Cornerstone

Eph 2:17  And he came and preached peace to you who were far off and peace to those who were near. 

Eph 2:18  For through him we both have access in one Spirit to the Father. 

Eph 2:19  So then you are no longer strangers and aliens, but you are fellow citizens with the saints and members of the household of God, 

Eph 2:20  built on the foundation of the apostles and prophets, Christ Jesus himself being the cornerstone, 

Eph 2:21  in whom the whole structure, being joined together, grows into a holy temple in the Lord. 

Eph 2:22  In him you also are being built together into a dwelling place for God by the Spirit. 

Jesus is the cornerstone of the holy temple of God. I googled a definition of cornerstone from Chron.com:

It is the rock upon which the weight of the entire structure rests. It is the cornerstone. Scripture describes Jesus as the "Chief Cornerstone" of our faith. ... Isaiah 28:16, "Therefore this says the Lord God: 'Behold, I lay in Zion a stone for a foundation, a tried stone, a precious cornerstone, a sure foundation.

The foundation must be strong and true.  From woodworking experience we use a framing square to make sure the structure is straight and true. The foundation of the church is solid and true. Jesus is the foundation. God hates an untrue measure in a scale.  The devil twists scriptures to make them say what they do not say. The way to God is the straight way, the narrow way which is Jesus. His words are true and he is our faithful High Priest interceding for us.  The foundation rock that is Jesus is what the church rests on.

Mat 7:24  “Everyone then who hears these words of mine and does them will be like a wise man who built his house on the rock. 

Mat 7:25  And the rain fell, and the floods came, and the winds blew and beat on that house, but it did not fall, because it had been founded on the rock. 

Mat 7:26  And everyone who hears these words of mine and does not do them will be like a foolish man who built his house on the sand. 

Mat 7:27  And the rain fell, and the floods came, and the winds blew and beat against that house, and it fell, and great was the fall of it.” 

The foundation is built on Jesus, the Living Word and then the apostles and the prophets who spoke the word of God. All who are in Jesus by faith are building the holy temple of God, this is the Church of Jesus Christ. Dig deeper into these truths for there is much more that could be said.