Thank you for pointing this out, Lily. Although I stand by my original statement, I need to clarify it in light of CCC# 1863. Repentance for sin (mortal and venial) is a necessary component for salvation. Otherwise, God would be forcing his mercy on us, and this would contradict the various biblical teachings that we are to offer our contrition to God in order to be open to his forgiveness (such as expressed in Psalm 51:17).
Also let us consider what the Catechism states in its teaching on blasphemy against the Holy Spirit, which is mentioned therein immediately after the quote you provided about venial sin:
There are no limits to the mercy of God, but anyone who deliberately refuses to accept his mercy by repenting, rejects the forgiveness of his sins and the salvation offered by the Holy Spirit. Such hardness of heart can lead to final impenitence and eternal loss. (CCC #1864)
There is no qualification that this specifically applies to mortal sin rather than sin in general. Moreover, the following is Dr. Peter Kreeft’s elaboration on CCC #1864:
“No sin is too great for God’s forgiveness to save us from, but no sin is too small to damn us if we refuse to repent of it.”
- Dr. Peter Kreeft, Catholic Christianity (Ignatius Press: San Francisco, 2001), 123.
Likewise, in the Catechism’s teaching on 1John 8-9…
To receive his mercy, we must admit our faults. “If we say we have no sin, we deceive ourselves, and the truth is not in us. If we confess our sins, he is faithful and just, and will forgive our sins and cleanse us from all unrighteousness.” (CCC# 1847)
Therefore, a person who is only guilty of venial sins can, indeed, end up in hell if he flat out refuses to be contrite over them. I suppose it could be argued that this refusal to repent constitutes a mortal sin, and that would be an interesting discussion in and of itself. But to keep this in the context of the OP, my initial statement was that even though venial sins are not as serious as mortal sins, our attitude about them (such as refusal to be repentant) can still put us into hell.
Lily, I think that you and I agree on the necessity of repentance, but we differ on when it has to happen (regarding venial sin). Correct me if I’m wrong, but you seem to imply that if a person does not repent of venial sin in this life (and he is not guilty of mortal sin) then he does so in Purgatory. But I submit that it has to happen prior to Purgatory. In other words, it seems that it has to take place prior to one’s particular judgment. Exactly how the time-table for this works out is known only to God, but even if someone never specifically repented of venial sins in his life, it stands to reason that he had better have a contrite heart for all his sins (even venial ones) when standing before the throne of God.
People who go to Purgatory have already been deemed justified in the eyes of God, and everyone who goes to Purgatory will eventually end up in heaven. In light of this, the time for someone’s repentance is before his judgment, not after.