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:
Christian deism
This may give the Reader some Notion of this Writer's Candour and Sincerity, and what we are to think of his pretended Regard for Christianity, which in Effect amounts to this: That the Christianity revealed in the Writings of the New Testament is Jewish Christianity; that is, Christianity corrupted and adulterated with Judaism, which according to him is the worst Religion in the World. But the true and genuine Christianity is Christian Deism, to be learned not from the Writings of the New Testament, but from the Volume of Nature, from every Man's own Breast, from the Heavens, the Earth, and especially the Brute Creatures,the genuine uncorrupted Instructors in our Author's Christianity. So that the "Gentlemen that assume to themselves the Title of Deists, seem resolved that for the future they only shall be called the true Christians too. Those that look upon the New Testament to be divinely inspired, and receive it as the Rule of their Faith, and take their Religion from thence, must be called Christian Jews, who only put a strange Mixture of inconsistent Religions upon the World for Christianity : whereas these Christian Deists teach it in its Purity, and in order to propagate pure uncorrupted Christianity they do their utmost to discard.the Writings of the New Testament, that Is, the Writings that give us aft Account of the Doctrines taught by Christ and his Apostles, But since these Gentlemen will not allow; us the honorable Title of Christians, it is but fair that they should leave us that of Free-Thinkers, to which I really think the Advocates for the Gospel Revelation have a much juster Pretension than they.