Roman Catholic theology asserts that suicide is a sin for violating the sixth commandment. However, in the Roman Catholic Church atonement is viewed differently than Protestantism. The inclusion of the sacraments in forgiveness are the difference. In Catholic theology the baptized Catholic has the opportunity of sacramental reconciliation (contrition, confession, absolution, and satisfaction or penance). In the case of a suicide, the guilty party never has the opportunity.
This myth, regarding the “unpardonable sin”, is about a phrase used twice by Jesus himself. The two passages are Matthew 12 and Mark 3.
“Truly, I say to you, all sins will be forgiven the children of man, and whatever blasphemies they utter, but whoever blasphemes against the Holy Spirit never has forgiveness, but is guilty of an eternal sin”—for they were saying, “He has an unclean spirit.” Mark 3:28-30 ESV
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 to forgive us our sins and to cleanse us from all unrighteousness. If we say we have not sinned, we make him a liar, and his word is not in us. [1 John 1:8-10 ESV]
Just because something is potentially forgivable by God, does not make it acceptable with God. To take your own life is to assert your own authority over the life God has given you (this is the topic of the next blog post).
~ Martin Luther