How can someone cross from the world's kingdom to God's kingdom?

Transitioning from the world's kingdom to God's kingdom is a profound spiritual transformation that occurs through faith in Jesus Christ. It begins with God’s call to sinners, inviting them to recognize their need for salvation and to repent of their sin. In John 1, the calling of the first disciples illustrates that upon hearing the message of Christ, they responded by following Him. This act of following denotes a complete commitment to Jesus as Lord and Savior. Colossians 1:13 speaks about being transferred from the kingdom of darkness into the kingdom of God's Son. This animation of the heart involves recognizing Jesus as the only means of reconciliation with God, leading to a life marked by obedience to His Word, engagement in fellowship with other believers, and a heart transformed by the grace of God.