I can see about the Apostles doing that but was just wondering about priests absolving sin is all ....
It is a ministry directly connected to the Apostles and therefore passed on to their successors through the ages -— since the Church did not die out with the death of the last Apostle. Priests act on a delegated authority: a bishop can grant, or suspend, or terminate a priest’s “faculty” to be minister of this Sacrament.