Mortal sin

[Christ_is_love]

I am having difficulty understanding when a mortal sin is deemed grave. I wasn’t able to find an answer anywhere on Catholic.com so I searched the web. I read this website saintaquinas.com/mortal_sin.html . I would like to know if this website is correct in defining how a mortal sin becomes grave in manner.

 

[Christ_is_love]

I also realised they missed the commandment “honour your Father and your Mother”

 

[laszlo]

I am having difficulty understanding when a mortal sin is deemed grave. I wasn’t able to find an answer anywhere on Catholic.com so I searched the web. I read this website saintaquinas.com/mortal_sin.html . I would like to know if this website is correct in defining how a mortal sin becomes grave in manner.

Yes. A sin became grave, and thous mortal given the other conditions, by the definition of the Church:

Matt 18:18 Amen I say to you, whatsoever you shall bind upon earth, shall be bound also in heaven; and whatsoever you shall loose upon earth, shall be loosed also in heaven.

This is why the website quotes the lists of St Paul and the commandments of the Church. No one else, but the Magisterium, and those given power through the Magisterium (priests with jurisdiction) can make decision about what is grave and what is not. It is not the matter of think thank.

 

[Bookcat]

I am having difficulty understanding when a mortal sin is deemed grave. I wasn’t able to find an answer anywhere on Catholic.com so I searched the web. I read this website saintaquinas.com/mortal_sin.html . I would like to know if this website is correct in defining how a mortal sin becomes grave in manner.

Mortal sin = grave sin. The terms are used interchangbly by the Church.

Mortal sin (grave sin) is committed when one has grave matter (ie Lust, adultery, murder, stealing large amount etc) and full knowledge with complete consent.

From the Compendium of the Catechism of the Catholic Church

1. When does one commit a mortal sin?

1855-1861
1874

One commits a mortal sin when there are simultaneously present: grave matter, full knowledge, and deliberate consent. This sin destroys charity in us, deprives us of sanctifying grace, and, if unrepented, leads us to the eternal death of hell. It can be forgiven in the ordinary way by means of the sacraments of Baptism and of Penance or Reconciliation.

1. When does one commit a venial sin?

1862-1864
1875

One commits a venial sin, which is essentially different from a mortal sin, when the matter involved is less serious or, even if it is grave, when full knowledge or complete consent are absent. Venial sin does not break the covenant with God but it weakens charity and manifests a disordered affection for created goods. It impedes the progress of a soul in the exercise of the virtues and in the practice of moral good. It merits temporal punishment which purifies.

vatican.va/archive/compendium_ccc/documents/archive_2005_compendium-ccc_en.html

also see the Catechism:

vatican.va/archive/catechism/p3s1c1a8.htm#IV