When I was a kid, our house had a kitchen and a dining room, and there was a wall, with a doorway, between the two.
That wall is no longer there. At some point while I was growing up, my parents decided they'd had enough of that wall. They wanted to have one large, wide open room, instead of two smaller rooms.
So dad took a sledgehammer to the wall and knocked it out. Of course, when they built the house in the first place, they knew that someday they might want to get rid of that wall, so they were careful to build the house in such a way that this wall was not a load-bearing wall. It was supporting nothing. Nothing else anywhere in the house depended on it. It was, in a nutshell, useless.
The book of Ephesians tells us this:
1 Peter 2:4 adds to this image by telling us that we are not just stones in a building, but we are living stones, growing together as God has fitted us together.
But as God is building His house, He is not putting in any useless stones. There is no part of His church that He could point at and say, "That living stone there doesn't support anything. Nothing else in My house depends on that living stone. That living stone is, in a nutshell, useless. I could take a sledgehammer to that living stone and it wouldn't affect anything else in the building."
We are all "load bearing" in the church. God has fit us together perfectly, designing each of us to bear and carry a load which was specifically designed for us. Galatians tells us this:
The good news is that the load is not an unbearable load; Jesus said in Matthew:
In 1 John, John reiterates these words by assuring his readers that:
The loads we are each given are not unbearable, or unreasonable. But they are our burdens to carry. And in carrying our own load, we support and strengthen all the other living stones in the building with us, strengthening the entire structure. It is an exciting realization to understand that we are fitted so perfectly together by God, but with that realization comes an exciting responsibility as well -- to build up, strengthen, and support the living stones all around us, who shoulder their loads side by side with us.