You must confess mortal (very serious) sins.
For a sin to be mortal, three conditions must be present:
There must be grave matter (some thing that is seriously, gravely wrong)
You must have full knowledge (you must be aware that it is seriously wrong)
You must have complete consent (you must freely and voluntarily commit the sin)
If one, two, or all of these conditions are not present in a sin, the sin is venial (not as serious). Although confessing venial sins is not required, it is highly reccomended because doing this can help you to avoid sin in the future.
The name of the sacrament which you confesses your sins is called the Sacrament of Penance. Its three names are reconciliation, penance, and confession.
Venial sins can be, but mortal sins can only be forgiven through the sacrament of penance. Although it is recommended to confess venial sins in the sacrament of penance as well.
You can receive the sacrament of Penance if you have any sin including not only mortal sins but venial sins as well. If you have sin, it is recommended but not necessary to receive the sacrament (Except for mortal sins where you must confess it)
Roman Catholic AnswerBecause that is what God made the ordinary vehicle for His forgiveness.
You receive penance through the sacrament of reconciliation. After committing a grave sin you would confess you sin to a Holy Father. Then you would ask him for a penance. A grave sin is considered one that breaks any of the Ten Commandments.
Roman Catholic AnswerIf by penance you are referring to the Sacrament of Reconciliation, the traditional way of doing this is to confess your sins to a priest while you are kneeling behind a screen in a confessional.
It is where the person confesses their sins and then they are forgiven by God. The person then does penance. The person must be truly sorry for their before they confess them.
Of course you can confess your sins when you pray at night, as a matter of fact, you are urged to do this every night before going to bed. However, do not confuse this with the sacrament of Penance (popularly known as Confession). The Sacrament of Penance (aka Confession) requires a priest.
In the teaching of the Roman Catholic Church, the Sacrament of Penance (commonly called Confession, Reconciliation or Penance) is the method given by Christ to the Church by which individual men and women may be freed from sins committed after receiving Baptism. (It is not necessary to confess sins committed before baptism, as baptism itself is considered to remove the guilt of all prior sins.)For the Sacrament to be valid these elements in Matter and Form are required:The acts of the penitent (namely contrition, confession, and satisfaction) are the proximate matter of this sacrament.The form of the Sacrament of Penance is the absolution imparted with certain words "I absolve the.." while the acts of the penitent are required for the worthy reception of the sacrament.The Code of Canon Law requires all Roman Catholics to confess mortal sins at least once a year, although frequent reception of the sacrament is recommended.
The Pentitential Rite at the beginning of Mass is when we confess our sins and are absolved by the priest's blessing of venial (less serious) sins. Mortal (serious) sins must still be confessed in the sacrament of Penance (Confession).
.Catholic AnswerIn the sacrament of Confession, also know as Reconciliation or Penance: we confess our sinners with TRUE contrition, and the priest gives us absolution. The sacrament of Baptism, of course, forgives ALL sins committed up to that point in life. The Sacrament of the Eucharist forgives all venial sins to someone who attends Mass with sincere contrition and participates in the Penitential Rite, and the Sacrament of Anointing (Unction) also forgives sins.
In Roman Catholic teaching, the Sacrament of Penance(commonly called Confession, Reconciliation or Penance) is the sacrament given by Our Blessed Lord to the Church by which individual men and women may be freed from sins committed after Baptism.In the Sacrament of Penance, the penitent must examine himself beforehand, confess ALL grave sins by kind and number to the priest (or bishop). He then must express contrition for his sins, and a firm purpose of amendment (not to do them again). He then receives Our Blessed Lord's absolution through His minister, the priest or bishop. After leaving the sacrament, he must perform his penance which was assigned to him by the priest. The contrition on the part of the penitent and the firm resolve not to do it again are both necessary for the absolution to be effective.Penance or confession, historically adminstered as Sacrament no.2 in the order of application- Baptism(all) Confession ( All) Communion ( all) Confirmation (all) then the selective Episcopal sacraments ( which can only be conferred by a Bishop) -but confirmation is one , also- Holy Orders The Last Rites or Extreme Unction- for the dead and dying- and usually numbered lastly- Matrimony. Only a Bishop can conduct Confirmation and Ordination ceremonies. all of the others can be administered by a Priest.They are the same thing. "Reconciliation" is the post-Vatican II term for the Sacrament of Penance.