Faith and Forgiveness

In John 20:23, does Jesus contradict his instructions mandating forgiveness in the Lord’s prayer? The gospel message is a message of forgiveness of sin to those who accept it, but those who refuse forgiveness are not forgiven. Thomas saw Jesus’ wounds, but faith is evidence of things without visible proof (Hebrews 11:1), a mystery. All the disciples doubted, not just Thomas. This is written that we might believe and that believing we might have life through his name. Faith is a gift from God. God entrusts incredible authority to faulty disciples. We accept the message of Jesus, delivered by ordinary faulty people, and will be forgiven when we do.