How does Saint Peter outline the path toward partaking of the divine nature and defend the truth of apostolic prophecy in 2 Peter 1?

Simon Peter, writing as a servant and apostle of Jesus Christ, addresses believers who have received a faith equally precious as his own through the righteousness of our God and Savior Jesus Christ, wishing them an abundant multiplication of divine grace and peace through intimate knowledge of God and our Lord. The apostle explains that God's almighty power has bestowed upon disciples everything necessary for spiritual life and true godliness through the knowledge of Christ, who summoned believers by His own radiant glory and virtue. Through these divine gifts, Christ has granted magnificent and priceless promises, enabling the faithful to escape the moral rot generated by worldly concupiscence and become actual partakers of the divine nature.

To realize this sublime calling, the apostle urges believers to apply earnest diligence in constructing a progressive ladder of Christian virtues. Upon the firm foundation of lively faith, disciples must supply moral virtue; to virtue they must add spiritual knowledge; to knowledge, temperate self-restraint; to self-restraint, patient endurance; to endurance, devout godliness; to godliness, fraternal affection; and to fraternal affection, universal charity. When these virtues reside and flourish within believers, they prevent the soul from becoming barren or ineffective in the knowledge of our Lord Jesus Christ. Conversely, anyone who lacks these moral fruits remains spiritually blind and shortsighted, having forgotten the cleansing of his former sins. For this reason, the apostle exhorts the brethren to apply even greater labor so that, through active good works, they may render their divine vocation and election secure, assuring them that doing these things, they shall not sin at any time and grant them a triumphant entrance into the everlasting kingdom of Jesus Christ.

Recognizing the urgent duty of his apostolic office, Peter commits himself to reminding the faithful continually of these sacred truths, even though they already know them and remain grounded in present truth. The apostle considers it right, so long as he dwells within the temporary tabernacle of his physical body, to awaken their spiritual vigilance through constant reminders. He reveals that his earthly departure is imminent, as our Lord Jesus Christ personally disclosed to him, and he promises to make every effort so that, even after his death, the church will retain an enduring remembrance of his teaching.

Defending the historical truth of the apostolic message against skepticism, Peter vigorously denies that the apostles relied on cleverly concocted fables when announcing the power and presence of our Lord Jesus Christ. Rather, Peter and his fellow apostles were privileged eyewitnesses of Christ's majestic splendor on the holy mountain of the Transfiguration. There, Jesus received transcendent honor and glory from God the Father when the sublime voice resounded from the magnificent glory, declaring Him to be the beloved Son in whom the Father is well pleased, and commanding Hear ye him. The apostles personally heard this celestial voice reverberate from heaven while standing beside Him on that sacred peak.

Furthermore, the church possesses the confirmed testimony of the Old Testament prophets, which Peter compares to a radiant lamp illuminating a dark and murky world, urging believers to heed this prophetic light until the eschatological day dawns and the morning star arises within their hearts. Above all, disciples must recognize that no prophecy of Sacred Scripture is subject to individual, private interpretation. As Bishop Challoner clarifies in his commentary, because all Scripture was composed by holy men under the inspiration of the Holy Spirit and entrusted to the Church, it cannot be expounded by personal subjective judgment or private inspiration, but must be interpreted in fidelity to the Holy Spirit promised to remain with the Church to guide it in truth to the end of the world. The annotation adds that divines interpret Scripture in submission to the Church’s judgment. Prophecy never originated from human impulse; rather, consecrated men of God spoke as they were carried along and inspired by the Holy Ghost.