>>11260012The first one implies can, in that after leaving Christ's side, the apostles retained this ability.
The second implies do, by dictating foundation of an earthly assembly and the power designated to them.
Having never made confession, I'm sure you don't know about the act of contrition. The portion in which the penitent (hopefully you) turns directly to The Father, with the support of his two witnesses, to beg forgiveness for his sins. It is the most important part, but perhaps comes so naturally as to be omitted in description.
Actually, do you need a full description? It's apparent that you are arguing from a position of ignorance on many parts of the faith. And although I am no apologist, I can help show the truth and calm your troubled mind.