Hence it had the effect of lessening the prejudices of some, so that the Quakers were never afterwards treated, on this account, in the same rugged manner as they had been before.
But though this book procured the Quakers an amelioration of treatment on the amended use of the expression thou, there were individuals in the society, who thought they ought to put their defence on a better foundation, by stating all the reasons, for there were many besides those in this book, which had induced them to differ from their fellow citizens on this subject.

This was done both by Robert Barclay and William Penn in works, which defended other principles of the Quakers, and other peculiarities in their language.
One of the arguments, by which the use of the pronoun thou was defended, was the same as that, on which it had been defended by Stubbs and Furley, that is, its strict conformity with grammar.

The translators of the Bible had invariably used it.

The liturgy had been compiled on the same principle.

All addresses made by English Christians in their private prayers to the Supreme Being, were made in the language of thou, and not of you.