Read Ephesians 3:10 as a Family:
When I was a kid, I enjoyed playing sports and pick-up games of whatever variety around the neighborhood. I was an ok athlete, but certainly not the best. So whenever the captains were chosen and they began picking teams, I was usually chosen somewhere in the middle of the "draft."

This ritual of picking teams was usually pretty predictable. Captains might pick their friends early on, but the bottom line was always trying to pick a team that could win the game. But once in a while a captain would surprise the group by making an unexpected pick. Maybe they noticed something the rest of us missed, or they had a strategy that would require that player in a special way.

In the mission of saving a lost world, God is the captain, and he gets to pick his team. As you read the Bible, it might seem like God often made some surprising picks. He picks the youngest son of Jesse, named David, over his impressive brothers, to be the King. Jesus calls a rag-tag bunch of mostly uneducated fishermen to lead his Gospel movement. And the story goes on and on.

It also seems like a strange pick for God to make known his wisdom to the universe through the church, a group of people that make mistakes. But that is what He did. And just like in all the other strange picks, God's plan eventually plays itself out, and we see that He knew what He was doing all along. He's a great captain! He has a plan and a strategy, and the church is central to His plan!