1 Peter 1:21

Who by him do believe in God ; or, according to two of the most ancient manuscripts, who through him are faithful towards God . Through himself, not only through his incarnation and atoning death, but through his grace and abiding presence. He was manifested for your sake who through him are faithful; for all the faithful, whether Jews or Gentiles; "for your glory," St. Paul says ( 1 Corinthians 2:7 ). The thought shows the greatness of God's love for his elect. The eternal Son was manifested for their sake; it gives an additional stimulus for Christian effort. That raised him up from the dead, and gave him glory. St. Peter returns to the "after-glories," which he had mentioned in 1 Peter 1:11 . The death of Christ is the atonement for sin; his resurrection and ascension are the grounds of our confidence and hope. They throw back a halo of Divine glory upon the awful cross; they bring out the beauty and the dignity of the atoning sacrifice; they show that it is accepted, that the work of our redemption is complete. The Resurrection held a very prominent place in the preaching of St. Peter, and, indeed, of all the apostles ( Acts 2:32-36 ; Acts 3:15 ; Acts 4:10 ; comp. also Acts 4:33 ; Romans 1:4 , etc.). That your faith and hope might be in God; rather, so that your faith and hope are in God—directed towards God ( εἰς θεόν ); or perhaps, as Weiss, Huther, and others, "so that your faith is at the same time hope towards God." The resurrection and the glory of Christ not only inspire the Christian with confidence in God, but they also give his faith the character of hope; they fill it with hope. Christ had promised that where he is there should his servant be; he had prayed that those whom the Father had given him should be with him where he is, to behold his glory. He is in heaven, on the right hand of God. Thus the Christian's faith assumes the attitude of hope; he hopes to be where Christ is, to see him as he is, to be made like unto him. This is "the hope of glory" for which we offer our thanksgivings. St. Peter is the apostle of hope.