What does it mean to be 'not of this world'?

To be 'not of this world' indicates a profound transformation that occurs when individuals trust in Christ. Jesus asserts in John 17:16 that His disciples are not of the world just as He is not. This means that while Christians live in an earthly realm, their true identity and citizenship are in the spiritual Kingdom of God. They are called to reflect the values of this Kingdom, which often contrast with worldly wisdom and practices. This distinction enables believers to view their lives through the lens of faith, anchoring their hope and purpose in their new reality as children of God, set apart for His glory. Such a mindset not only influences personal holiness but also motivates the mission of the Church in reaching the lost.