Tregelles was especially distressed at the spread of Mormonism and in 1854 wrote to his evangelical friend Eben Fardd, "while Mormonism and other things are spreading themselves in Wales, it is well for some effort to be made to uphold the simple historical authority of the Scriptures which God has been pleased to give us as the sure record of His holy will."
Tregelles martwił się zwłaszcza szerzeniem się mormonizmu i w 1854 roku pisał do swego przyjaciela Eben Fardd, „while Mormonism and other things are spreading themselves in Wales, it is well for some effort to be made to uphold the simple historical authority of the Scriptures which God has been pleased to give us as the sure record of His holy will.”