Peter saw Jesus as his redeemer, who died on the cross to pay the price for humanity's sins. Jesus willingly took on suffering and died in our place, just as animals were sacrificed under the old covenant. Peter refers to Jesus' redemption, passion on the cross, and resurrection throughout his letters. He recognizes Jesus as the promised Messiah and understands his divine nature as both the Son of God and one with God. Peter writes to strengthen believers' faith in Jesus as their Lord and Savior.