What does 1 Peter 1:21 mean?

Continuing his thought from verse 20, that Jesus had been revealed as God's Son and the sacrifice for sin for our sake, Peter writes that it is through Christ that we have become believers in God. Peter heard Jesus say the same Himself in John 14:6–7: Nobody comes to the Father except through the Son. He is the way, the truth, and the life. Many may say they believe in God, but only through trusting in Christ do we truly put our faith in the Father.

God's plan didn't stop with the sacrifice of His only birth Son as the payment for sin. Peter says that God also raised Christ from the dead and gave Him glory. Describing that glory given to Jesus by the Father, Paul wrote that God "…highly exalted him and bestowed on him the name that is above every name" (Philippians 2:9).

So our faith and hope are in God. In the same way that God had a plan for Christ's life and death and resurrection and glory, He has a plan for our life, death, resurrection, and glory. We trust the God who did all of that in and through Christ and know He will do the same in and through us. Our hope is in exactly the right place.