Why is the concept of oneness important for Christians?

The concept of oneness among Christians is important as it mirrors the relationship between the Father and the Son. In John 17:21, Jesus prays that believers may be one as He and the Father are one. This union signifies not just a corporate identity, but a spiritual reality in which believers share in the divine life of Christ. It is a unique oneness meant for the children of God, highlighting the communal aspect of salvation and the importance of believers' unity in faith and purpose. This oneness also serves as a powerful testimony to the world about Christ’s mission and love for His people.