Why do Christians have to suffer for their faith?

In Philippians 1:29, Paul states, 'For unto you it is given in the behalf of Christ, not only to believe on him, but also to suffer for his sake.' The apostle indicates that suffering is an integral aspect of authentic Christian life. It identifies us with Christ's own sufferings and serves as a means for spiritual growth and maturity. As we endure hardships for the sake of the Gospel, our reliance on God's grace increases, resulting in a deeper understanding of His character and promises. Furthermore, suffering can serve as a testimony to others, witnessing to the transformative power of faith amidst adversity.