Have you ever built a house? There are many parts of the process; building plans, foundation, framing, roofing, wiring, sheetrock, floors, paint, etc. Building a house requires time, effort, know how, or skill. It takes many different people to make it happen.
Building for the Lord is no different;
-building means growing and maturing in the Lord;
-building means service;
-and building means pleasing Him in all things.
Unless the Lord builds the house, they labor in vain who build it. Psalm 127:1