The Building and the Cornerstone

Ephesians 2:19 - 20, according to the Message:
That's plain enough, isn't it? You're no longer wandering exiles. This kingdom of faith is now your home country. You're no longer strangers or outsiders. You belong here, with as much right to the name Christian as anyone. God is building a home. He's using us all—irrespective of how we got here—in what he is building. He used the apostles and prophets for the foundation.

This is the fellowship of the saints...
It strikes me that our unity - our oneness, our sense of community, our belonging as family - rests ON the heritage of Peter and James and John and Paul...held together by Jesus.
This is different from the world.
In worldly life, we find our place in a hierarchy of others. The leaders - the best, the cleverest, the richest, the most successful - are at the top. Yet Jesus is not some remote Lord and Master, some distant boss whose business we aspire to work for or are employed by but are unsure how long we will be employed. He is the CORNERSTONE: "... the first stone set in the construction of a masonry foundation, important since all other stones will be set in reference to this stone, thus determining the position of the entire structure."
We are being built TOGETHER, joined together, working together to form the church with Jesus holding us TOGETHER.
An upside-down pyramid which cannot totter and fall because of JESUS!