Why is understanding Christ's union with the church important?

The union between Christ and His church is crucial for understanding our identity and salvation as believers. As outlined in Ephesians 5:32, this mystery illustrates not just a collective relationship but an individual relationship between Christ and each believer. It emphasizes that the church is His body, with Christ as the head, affirming that He nourishes and sustains us. This union is vital for our spiritual life; it signifies that our righteousness before God comes solely from being found in Him. Recognizing this truth leads to a deeper appreciation of grace and the assurance of eternal security in Christ.