From other passages we can find out the answers to more questions. God paid for it with his own blood -Acts 20:28. Christians are the materials he uses to build it - 1 Peter 2:5. Jesus is the chief cornerstone of the foundation with the apostles and prophets helping complete the foundation - Ephesians 2:20. He began building in Jerusalem, but has continued to make additions to it through the ages - Acts 2:47
There’s more, but let’s focus back on Christ: the builder, owner, and purchaser. He will decide who is and who is not in his church. He will decide where each stone is placed and what function it will serve. In any building there are different purposes for different parts. We sometimes are guilty of thinking like the apostles, ‘Who is the greatest in the kingdom (church)?’. We must remember that Jesus is the greatest and we are created for him - Colossians 1:15-18. We should be content to be part of what he is building and do our best to bring him glory and honor no matter the place he puts us or the way he chooses for us to be used. To use a concept from scripture with a different example: Shall the brick say to the builder why did you put me here? Or, Why didn’t you use me in a more prominent position?
We answer to the Builder. Are you doing your best to fit into God’s building where the builder has placed you?
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