MOST sins are forgivable, however, there is one sin that is unforgivable. Jesus Christ warns us about this in Holy Scripture:
"Truly I tell you, people can be forgiven all their sins and every slander they utter, but whoever blasphemes against the Holy Spirit will never be forgiven; they are guilty of an eternal sin.â€
-Mark 3: 28-29
In other words, the Catechism in synergism with Sacred Scripture, teaches that blaspheming the Holy Spirit constitutes in one who perpetually denies the mercy of God through the Teachings of The Holy Mother Church, the ministry of the Sacraments is of grace concern.
This is why we humbly implore God's Mercy in all things.
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