How does Christ serve as both the builder and the foundation of the church?

In the context of the sermon, Christ is depicted as the master builder who has laid the foundation of the church through His sacrificial death (1 Corinthians 3:10). The apostles, under the guidance of the Holy Spirit, preach Christ, thereby building upon that established foundation. This dual role illustrates God's sovereign plan in which Christ not only establishes the church's foundation but also sustains and grows it through His ongoing work in the lives of believers. The church, therefore, rests securely on the solid rock of Christ and continually looks to Him for guidance and strength.