Have you never read the Bible??
The questions you are asking are EASILY answered by Scripture.
In John 20:21-23, Jesus (who is God) breathes on the Apostles as he is giving them this power:
Jesus said to them again, "Peace be with you. As the Father has sent me, so I send you."
And when he had said this, he breathed on them and said to them, "Receive the holy Spirit. Whose sins you forgive are forgiven them, and whose sins you retain are retained."
The fact that Jesus breathed on the Apostles when entrusted them with this ministry is highly significant because he doesn’t do this anywhere else in the New Testament. In fact, there are only two times in ALL of Scripture where God breathes on man:
The first is when he breathed life into Adam.
The second is here in John’s Gospel when he is giving them the power to forgive or retain sins.
Also - WHAT did the Father send Jesus here to do? He sent Him to bring about the FORGIVENESS of sins.
"As the Father has sent me, so I send you."
He didn't say this to the Apostles by accident.
Paul makes NO small case for this ministry of Reconciliation in 2 Cor. 5:18-20:
“And all this is from God, who has reconciled us to himself through Christ and given us the ministry of reconciliation, namely, God was reconciling the world to himself in Christ, not counting their trespasses against them and entrusting to us the message of reconciliation. So we are ambassadors for Christ, as if God were appealing through us. We implore you on behalf of Christ, be reconciled to God.”
In 2 Cor. 2:10, he states, “Whomever you forgive anything, so do I. For indeed what I have forgiven, if I have forgiven anything, has been for you in the presence of Christ.”
In the Greek, the word “presence” here in this phrase is "Prosopone", which means Person. In the PERSON of Christ is a more correct translation. Paul was indicating that they were forgiving sins in the PERSON of Christ, which is translated into Latin as In Persona Christi.