6 Let us confirm one another by mutual exhortations, and let us more and more go forward in the Lord; so that when of His mercy He shall have made that peace which He promises to give, we may return to the Church new and almost changed men, and may be received, whether by our brethren or by the heathen, in all things corrected and renewed for the better; and those who formerly admired our glory in our courage may now admire the discipline in our lives. I bid you, beloved brethren, ever heartily farewell; and be mindful of me.
Source: The Epistles of Cyprian (New Advent)