This is a symbol of baptism, which now saves you-- not the putting away of the filth of the flesh, but the answer of a good conscience toward God, through the resurrection of Jesus Christ,
Through the resurrection of Jesus Christ ... Peter kept coming back again and again to the fountain source of all blessing.  Even the obedience of the gospel by sinners is not the source of their redemption, despite being one of the conditions of its bestowal.  The resurrection of Christ is everything in the Christian religion.  Both in  1 Peter 1:3 and here, Peter did not fail to stress this.