Eternal sin
Thomas Aquinas lists, or has responded to, six sins that supposedly go against the Holy Spirit:
Thomas Aquinas explains that the unforgivability of blasphemy against the Holy Spirit means that it removes the entrance to these means of salvation; however, it cannot hinder God in taking away this obstacle by way of a miracle.
Christian theology
In Eastern Christianity, sin is viewed in terms of its effects on relationships, both among people and between people and God. Sin is seen as the refusal to follow God's plan, and the desire to be like God and thus in direct opposition to him (see the account of Adam and Eve in the Book of Genesis). To sin is to want control of one's destiny in opposition to the will of God,
to do some rigid beliefs.