Quite frankly, Christ established a sacrament for the forgiveness of grave sins committed after baptism because he knew that people would commit gave sins after baptism.
Why confess your sins to a priest? Because Penance is a
sacrament. No one can administer a sacrament to himself. Christ established sacraments because of our human nature. He knows that we need
visible, bodily encounters with him. Without the sacraments, those who lived on earth at the same time as Christ would have been the only ones to have an entire–body and soul–person-to-person encounter with Christ. But, Christ desires to redeem each of us
totally and thus he took on a human body and a human soul. He also established sacraments to give us grace in a
visible way, in keeping with our human nature.
Venial sins, by the way, can also be the object of confession, but it is not
required to confess them.
Why is it required to confess mortal sins but not venial sins?
Because of the nature of mortal sin. Mortal sin destroys sanctifying grace in the soul. The soul is supernaturally dead, as it was before baptism. Therefore, a sacrament was instituted in order to bring the soul back to life again.
If the soul is only
wounded through
venial sin, the sacrament is not necessary since the soul is still alive.
As stated above, an act of perfect contrition with the intention to go to confession will restore sanctifying grace to the soul in anticipation of the sacrament.
From
The Catechism of the Catholic Church:
Can you show me where in scriptures Christ set up the sacrament of the confession.
I will agree that Jesus told his Apostles to forgive sins in his name, and I feel that it is a good practice to go to a Priest for absoultion. I just do not see anywhere in scriptures that say only, or, give the impression a Priest can forgive mortal sin.
I view the Lords Supper as place to have my sins forgiven. Here is what your Catehism say of the forgiveness of sins
1414 As sacrifice, the Eucharist is also offered in reparation for the sins of the living and the dead and to obtain spiritual or temporal benefits from God.
Here is a Lutheran (WELS) statement on Holy Communion
The Sacrament of Holy Communion
THE INSTITUTION OF HOLY COMMUNION
First: What is the sacrament of Holy Communion?
It is the true body and blood of our Lord Jesus Christ under the bread and wine, instituted by Christ for us Christians to eat and to drink.
Where is this written?
The holy Evangelists Matthew, Mark, Luke, and the Apostle Paul tell us: Our Lord Jesus Christ, on the night he was betrayed, took bread; and when he had given thanks, he broke it and gave it to his disciples, saying, “Take and eat; this is my body, which is given for you. Do this in remembrance of me.”
Then he took the cup, gave thanks, and gave it to them, saying, “Drink from it, all of you; this is my blood of the new covenant, which is poured out for you for the forgiveness of sins. Do this, whenever you drink it, in remembrance of me.”
THE BLESSINGS OF HOLY COMMUNION
Second: What blessing do we receive through this eating and drinking and drinking?
That is shown us by these words, “Given and poured out for you for the forgiveness of sins.” Through these words we receive forgiveness of sins, life, and salvation in this sacrament. For where there is forgiveness of sins, there is also life
and salvation.
THE POWER OF HOLY COMMUNION
Third: How can eating and drinking do such great things?
It is certainly not the eating and drinking that does such things, but the words, "Given and poured out for you for the forgiveness of sins. "These words are the main thing in this sacrament, along with the eating and drinking. And whoever believes these words has what they plainly say, the forgiveness of sins.
THE RECEPTION OF HOLY COMMUNION
Fourth: Who, then, is properly prepared to receive this
sacrament?
Fasting and other outward preparations may serve a good purpose, but he is properly prepared who believes these words, “Given and poured out for you for the forgiveness of sins.” But whoever does not believe these words or doubts them is not prepared, because the words “for you” require nothing but hearts that believe.
I’m not saying that it is wrong to confess ones sins to a Priest and is encouraged in the Bible. I just feel that it is a good practice , but not a requirement for your forgivenss of sins.
Holy Communion is for the forgivness of sins so why the two sacraments. Do you not get something during Holy Communion that you get from confessions in the spiritually sense.I know that you get a more personal feeling with a priest, but is the forgivness any different?
God Bless