What does the Bible say about spiritual attainment?

In Philippians 3:12, the Apostle Paul articulates a profound truth about the Christian experience: he acknowledges that he has not yet attained the fullness of what is in Christ. Paul expresses his humble recognition that there are depths of glory, heights of love, and profound realities in his relationship with Christ that exceed his current understanding and experience. He emphasizes the importance of striving forward, forgetting what lies behind, and earnestly pursuing the knowledge of Christ, demonstrating that spiritual growth is a continual journey, not a destination.

This scriptural perspective invites believers to see themselves as ongoing learners in the faith, reliant on the grace of God. The Apostle’s candid admission reflects a core aspect of the Reformed understanding: every Christian, regardless of their maturity or gifts, is still in need of growth and sanctification. Therefore, recognizing one's own spiritual shortcomings can motivate believers to seek deeper communion with Christ and rely on the Holy Spirit's work within them.