Why is the union of believers with Christ important for Christians?

The union of believers with Christ is vital for Christians as it forms the foundation of our identity and assurance of salvation. Our union with Christ signifies that His righteousness is imputed to us and we are accepted before God through Him. This means that all the blessings of salvation, including life, hope, and grace, flow from our relationship with Christ. Moreover, this union inspires a life of obedience and reliance on Christ, as He is the source of our spiritual nourishment and growth. In both his life and after his resurrection, Christ represents the fullness of redemption for His people, underscoring the importance of this union for every believer.