Eternal sin
In Catholic teaching there are six sins that blaspheme against the Holy Spirit. They are: Several passages in the Bible are frequently interpreted as referring to the unforgivable sin:
Forgiveness
Forgiveness is central to Christian ethics and is a frequent topic in sermons and theological works. Considering Mark 11:25, and , that follows the Lord's Prayer, "For if you forgive men when they sin against you, your heavenly Father will also forgive you. But if you do not forgive men their sins, your Father will not forgive your sins.," Forgiveness is not an option to a Christian, rather one must forgive to be a Christian. Forgiveness in Christianity is a manifestation of submission to Christ and fellow believers.