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.
Great Commandment
When asked which is the greatest commandment, the "Christian New Testament" depicts Jesus paraphrasing the Torah: "Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind," before also paraphrasing a second passage; "Thou shalt love thy neighbor as thyself." Most Christian denominations view these two commandments as, together, forming the core of the Christian religion. The second passage is considered to be a form of the Golden Rule (circa 1300 BCE).