How does a person become a citizen of the kingdom of God?

Becoming a citizen of the kingdom of God involves the steps of repentance and belief, as clearly articulated in Mark 1:15. Repentance entails turning away from sin and self-reliance, recognizing one's helplessness and need for divine mercy. Belief is a response of faith, trusting in Jesus Christ as the sole means of salvation. This process is initiated by God's sovereign grace, enabling individuals who recognize their sinful state to respond to the call of the gospel. Ultimately, it is the King who draws sinners to Himself, making them citizens of His glorious kingdom.