Why is the concept of being adopted by God important for Christians?

The doctrine of adoption is essential for Christians as it establishes our relationship with God. Through adoption, we become co-heirs with Christ, granting us access to His rich inheritance (Romans 8:17). This truth underlines God's incredible mercy; according to 1 John 3:1, we are recognized as the children of God, not by our merit, but by His love and grace. Understanding this helps believers to live in the light of their identity in Christ, freeing them from insecurity and fostering a deeper relationship with their Heavenly Father.