Because God is passionate for his own glory. He determined that “through the church the manifold wisdom of God might now be made known to the rulers and authorities in the heavenly places” (Ephesians 3:10).
God commits to using the church to accomplish his work of redemption by displaying the glory of his wisdom to the universe. God implemented the church. It exists as his one and only organizational plan for world missions. Most of all, the church exists as his Son’s beloved, blood-bought bride.