why do you need to confess at all? when you have a repentant heart, for me thats all the really matters. with a repentant heart, you are sorry for EVERYTHING, whether or not you remember every little detail. like the thief on the cross, did he confess to jesus? no. but he was repentant.
Well it’s a fair question, and is certainly a loaded one. And it’s certainly one that I have thought about myself. What it comes down to is that Christ is the one true mediator between God and man. But how he accomplishes the mediation is his choice. Upon ascending into heaven Christ instituted a church that would be his earthly guide for all nations. A church that would be protected and guided by the Holy Spirit, to preserve his Christian truths and guide all men to Jesus for their salvation. Essentially, this is where the Catholic Church came from. It was founded on Peter, the first of the popes. In the gospel of Matthew, Jesus tells Simon after his confession of faith:
“Blessed are you, Simon, son of Jonah. For flesh and blood has not revealed this to you, but my heavenly father. And so I say to you, you are Peter, and upon this rock I will build my church and the gates of the netherworld shall not prevail against it. I will give you the keys to the kingdom of heaven; and whatever you bind on earth shall be bound in heaven; and whatever you loose on earth shall be loosed in heaven.” --Matthew 16:17-19
Basically, in this passage Jesus does a curious thing. He changes Simon’s name to Peter. Peter translated into Aramaic (the language of Jesus and his apostles) is Kepha, or rock. So what Jesus did was say that Peter is the rock. Not just any rock, but the rock on which he will build his church. Jesus also says that the church would be infallible and would preserve his truths when he says “the gates of the netherworld shall not prevail against it…” (knowing the truth of Christianity certainly is necessary to be saved). He also gives Peter binding and loosing powers as well as the keys of heaven (strong symbols of authority) thus giving Peter ultimate teaching authority over the church. In order to preserve this authority and give the gift of teaching to the church, it had to be preserved from error in the future. This is why the successors of Peter have always been the leaders of the Church.
If Christ had not established a teaching, living, apostolic church then how could we properly understand the doctrines of the Bible? Note that 2 Peter 1:20 says “know this first of all, that there is no prophecy of scripture that is a matter of personal interpretation”. And even the Ethiopian eunuch on his way to Damascus while trying to interpret scripture asks for Philip’s help (who is ordained as a priest in Acts 6:5). "Philip ran up and heard him reading Isaiah the prophet and said, “Do you understand what you are reading?” He replied “How can I unless someone instructs me?” (Acts 8:30-31) Thus the church has the authority to properly teach the doctrines of faith for our salvation.Acts 6:1-6 shows the establishment of the priesthood under the apostles of the Church.
In the end, it is the divinely ordained teaching authority of the Church that assures me of the validity and necessity of the Christian Sacraments; especially that of Confession. The sacrament of reconcilliation (confession), the Church teaches, is the normative, necessary means by which a Christian receives the forgiveness of God. The efficacy of confession is derived from Christ’s sacrificial death on the cross, where he served as the divine substitute for our transgressions. Not only does the Church teach the need of regular confession, but the Bible also records Christ’s institution of the sacrament following his resurrection from the dead when he first appeared to the assembly of apostles (John 20:19-23):
On the evening of the first day of the week, when the doors were locked, where the disciples were, for fear of the Jews, Jesus came and stood in their midst and said to them, “Peace be with you.” When he had said this he showed them his hands and his side. The disciples rejoiced when they saw the Lord. Jesus said to them again, “Peace be with you. As the Father has sent me, so I send you.” And when he 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.”
I hope that answers your question, if not I can elabrate.
