1 Peter 1:3

3 Blessed be the God and Father of our Lord Jesus Christ, who according to His great mercy has caused us to be born again to a living hope through the resurrection of Jesus Christ from the dead,

Here Peter exhorts believers to bless, or to praise (NIV version) God for His great mercy, a mercy that has reached down in love and forgiveness, to give us new birth (to be a new creature in Christ, 2 Cor. 5:17). In this new birth we have a “living hope.’ This is a hope in what we will receive in our glorification at the Rapture—when we see Him in His glory (1 Jn. 3:2). This living hope is “through” the resurrection of Jesus Christ from the dead; that is, His resurrection gives us hope in our resurrection; hence, it makes our faith valid (1 Cor.15:17). Likewise, because He is resurrected to life, we also will live in a resurrected body (Jn. 11:25, 26).