The sermon continues an exposition of 1 Peter 2, picking up from verses 4-8 and focusing on verses 9-10. The preacher opens with reflections on a recent regional mission trip (KKR) to a remote area on the west coast, describing the harsh heat, the simple daily rhythms under large trees, and a visit to Kolbano Beach, a striking shoreline made entirely of colorful stones rather than sand. He recounts challenging local children to find two identical stones among the billions scattered there; none could be found, each one unique despite being worn smooth by the same waves. This image sets up Peter's description of Christ as the living stone, precious and chosen by God though rejected by men, and of believers as living stones built into a spiritual house where God dwells. Just as no two stones on that beach are alike, believers come from vastly different backgrounds and characters, yet all are gathered by grace into the one household of God, whether at GRII Melbourne or at any local branch of the church.

The sermon notes that the passage closes its prior section by explaining why some stumble over Christ: for those who reject him, the cornerstone becomes a stone of stumbling, because they do not submit to the word of God. Jewish and Greek audiences alike found a crucified Messiah incomprehensible — the Jews expected a militarily and politically powerful Messiah who would overthrow Rome, not one who would suffer, be crucified, and rise on the third day. Peter's own reaction to Jesus' prediction of his suffering in Matthew 16 illustrates this scandal: salvation through defeat and death seemed nonsensical to those steeped in expectations of a triumphant conquering king.

Turning to verses 9-10, the sermon frames these two verses as answering two of life's most fundamental questions: who am I, and why do I exist — identity and purpose. Peter gives five descriptions of the Christian's identity. First, believers are "a chosen race" — not a matter of nationality, ethnicity, or language, but people from every tribe, tongue, and nation chosen by God in Christ before the foundation of the world, not on the basis of merit or achievement but purely by grace. Second, believers are a people who have received mercy — God is just and cannot compromise with sin, so rather than punishing sin in the sinner, he punished it in his own Son on the cross, and by faith all who trust him receive God's mercy instead of judgment. This means identity is never grounded in performance; unlike a child who must strive endlessly to earn a parent's approval, the believer's status rests entirely on Christ's finished work, offering true freedom from the exhausting need to earn love and acceptance.

Third, believers are declared "God's own possession" — held simultaneously in the hand of Christ and the hand of the Father (drawing on John 10:28-29), a status that, once truly received by faith, can never be revoked by any sin committed afterward, though sin still grieves God and works against the believer's own new nature. Fourth, flowing from this, believers are "a holy nation," set apart to reflect God's character; even amid the comforts of a place like Melbourne, believers must resist being lulled into complacency by ease and convenience, remembering that true freedom and joy are found not in worldly comfort but in living according to God's word — illustrated by the analogy of a high-speed train, which can safely reach 380 km/h only while it stays on the rails; leaving them means destruction, just as staying within God's will, rather than restricting the believer, is what makes true freedom possible. Fifth, believers are "a royal priesthood," meaning direct access to God through the one mediator, Jesus Christ — no human priest stands between believer and God any longer — and also that every part of life is lived coram Deo, before the face of God, so that worship is not confined to Sunday but characterizes all of daily life, work, family, and leisure.

The sermon concludes that this fivefold identity is entirely the result of God's initiative — he chose, he showed mercy, he made us his own, he sanctified us, he granted priestly access — none of it grounded in family, upbringing, or self-determination, in contrast to the confusion produced when identity is sought elsewhere. Peter states the purpose flowing from this identity: "that you may proclaim the excellencies of him who called you out of darkness into his marvelous light." Having received a new status by grace, believers are called to declare God's mighty works in every sphere — small groups, workplaces, families, and even in matters like the regional mission efforts discussed earlier, sending others to serve where they themselves cannot go. The sermon closes with a prayer that the congregation would truly grasp this Christ-given identity and let their lives, words, and actions bear witness to God's greatness in the world.

Bible Verses Used

• 1 Peter 2:4-8: Christ described as the living, chosen, and precious cornerstone rejected by men but the ground of belief for those who trust him, and a stone of stumbling for those who reject him in disobedience.

• 1 Peter 2:9-10: The core text expounded, giving five descriptions of Christian identity (chosen race, recipients of mercy, God's possession, holy nation, royal priesthood) and the purpose of proclaiming God's excellencies.

• Matthew 16 (Peter's rebuke of Jesus): Illustrates why a crucified, suffering Messiah was scandalous to Jewish expectations of a triumphant king.

• John 10:28-29: Cited to show believers are held securely in both the Son's and the Father's hand as God's own possession.

• Romans 8: Referenced to affirm that God foreknew and loved believers before they existed, undergirding the doctrine of election.

• Revelation 5:9-10: Cited to show God's people are drawn from every tribe, language, people, and nation, not a single ethnicity.