In today’s first reading we are given a goal: “that you may come to share in the divine nature” (2 Peter 1:4). Wow! This is one of the most profound statements in the entire New Testament. It has played a central role in Christian theology, especially in the Eastern Christian tradition, where it is often called theosis or divinization. But the first thing to note is what Peter does not mean. He does not mean that human beings become gods by nature, cease to be creatures, or somehow merge into God’s essence. The distinction between Creator and creature remains. Yet Peter is saying something astonishingly positive: through Christ, human beings are invited into a real participation in God’s own life.

The fuller verse reads: “He has bestowed on us the precious and very great promises, so that through them you may come to share in the divine nature, after escaping from the corruption that is in the world because of evil desire.” Notice the contrast: corruption versus divine life, sin versus holiness, and death versus immortality. Peter is describing the restoration of humanity to the destiny God intended from the beginning. Human beings were created in God’s image (Genesis 1:26-27). Through Christ, that image is renewed and brought to fulfillment.

A helpful parallel is found in John’s Gospel: “To those who did accept him he gave power to become children of God” (John 1:12). And in Paul’s letters: “All of us… are being transformed into the same image from glory to glory” (2 Corinthians 3:18). The New Testament consistently teaches that salvation is not merely forgiveness of sins; it is participation in God’s own life.

The early Christian writers were remarkably bold in describing this mystery. Irenaeus of Lyons emphasized that Christ became what we are so that we might become what God intended us to be. He wrote: “The Word of God, our Lord Jesus Christ … became what we are, that He might bring us to be even what He is.” For Irenaeus, salvation is the restoration and completion of humanity.

Perhaps the most famous statement comes from Athanasius: “God became man so that man might become god.” This phrase can sound startling today, but Athanasius was not teaching that humans become divine beings independent of God. He meant that through union with Christ we share by grace what belongs to God by nature: immortality, holiness, righteousness, and communion with the Father.

Gregory of Nazianzus taught: “Let us become like Christ, since Christ became like us.” The Christian life is a process of transformation into Christ’s likeness. Augustine of Hippo also embraced this theme: “God became man, that man might become God.” For Augustine, participation in God means being drawn into the life of the Trinity through grace, not becoming divine in essence.

For Peter, sharing in the divine nature is not an abstract mystical concept. Immediately after this verse he lists virtues that should grow in the believer: faith, virtue, knowledge, self-control, endurance, godliness, mutual affection and love. The evidence of participation in God’s life is that a person increasingly reflects God’s character. One might say since God is love, holy, merciful, and faithful, then we are called to become those same things. The goal is not becoming less human but becoming fully human as God intended.

The Church Fathers provide a useful image: a piece of iron placed into a blazing fire. The iron remains iron. It does not become fire by nature. Yet it becomes glowing, radiant, and hot because it participates in the fire. So too, the Christian remains fully human. Yet through Christ, the sacraments, prayer, and the Holy Spirit, the believer becomes filled with the very life of God.

That is the astonishing promise Peter holds before his readers: salvation is not merely being rescued from something; it is being drawn into communion with God Himself, sharing by grace in what God is by nature. That is what Peter means by “share[ing] in the divine nature.”

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Image credit: Created by ChapGPT, May 31 2026 | “Iron being heated and glowing in fire”