“Together, we are his house, built on the foundation of the apostles and the prophets. And the cornerstone is Christ Jesus himself” (Ephesians 2:20, NLT).
One of the first things I learned from my dad, who did some carpentry, and my mom, who made clothes, was to measure twice and cut once. Carpenters have to be sure of their measurements before beginning construction of a house or building. If the first cut is off or the first piece laid is crooked, the whole thing will be a mess. The principle holds true in every area of life: the foundation must be good and true.
The cornerstone is the first stone laid for a building and it determines the position and integrity of the entire structure. The foundation of Christianity is Jesus and there is none more true. It’s crucial to keep ourselves in line with him and not to wander off into areas that have nothing to do with who he is. Keeping our eyes on him and knowing him is the most important thing we can do as Christians. If we do this, everything else will line up properly. Jesus—the rock, the cornerstone, the foundation, the great I AM—is the starting and ending point for our whole lives.
Jesus - Son, Savior, God 