The Cornerstone
There is a house under construction in my neighborhood. The builders started by pouring a solid, level foundation. They then add the sturdy bones of the house. Without that solid foundation and the beams and joists, the whole thing would collapse.
The Bible describes Jesus in a similar role. Jesus became the basis of our salvation, the foundation of our faith. He sacrificed Himself, making a way for us to be right with God, and bringing us into relationship with Him.
Because of this, Jesus has become the cornerstone of the house He is building, and the Bible tells us we are living stones in that structure.
You are joined in Christ to a huge structure of believers all over the world. This is His Church. What an honor to be a stone in that building!