Well, the priest is only acting in loco Christi, so the analogy does not completely work. The priest speaks for God because he has been ordained with the power to do so.
This power ultimately coming directly from Jesus. The question is where Jesus derived this power from. I don't think he was just "communicating" forgiveness.
SD
From God, right?
I don't think he was just "communicating" forgiveness.
If his will was perfectly aligned with the Father's, then his saying "your sins are forgiven" would be the same as if the Father were saying this, no?