Adams declares God to be "the first good, first perfect, and first fair" and defines Christianity to include all Christian denominations.
[Thomas Paine's] political writings, I am singular enough to believe, have done more harm than his irreligious ones. He understood neither government nor religion. From a malignant heart he wrote virulent declamations, which the enthusiastic fury of the times intimidated all men, even Mr. Burke, from answering as he ought. His deism, as it appears to me, has promoted rather than retarded the cause of revolution in America, and indeed in Europe. His billingsgate, stolen from Blount's Oracles of Reason, from Bolingbroke., Voltaire, Berenger, &c., will never discredit Christianity, which will hold its ground in some degree as long as human nature shall have any thing moral or intellectual left in it. The Christian religion, as I understand it, is the brightness of the glory and the express portrait of the character of the eternal, self-existent, independent, benevolent, all powerful and all merciful creator, preserver, and father of the universe, the first good, first perfect, and first fair. It will last as long as the world. Neither savage nor civilized man, without a revelation, could ever have discovered or invented it. Ask me not, then, whether I am a Catholic or Protestant, Calvinist or Arminian. As far as they are Christians, I wish to be a fellow-disciple with them all.