Spiritual maturity is achieved through becoming more like Jesus Christ. After salvation, every Christian begins the process of spiritual growth, with the intent to become spiritually mature. According to the apostle Paul, it’s an ongoing process that will never end in this life. In Philippians 3:12–14, speaking of full knowledge of Christ, he tells his readers that he himself has not “already obtained all this, or have already been made perfect, but I press on to take hold of that for which Christ Jesus took hold of me.