It is true that Baha’u'llah lays on every Baha’i the duty to teach His Faith. At the same time, however, we are forbidden to proselytize, so it is important for all believers to understand the difference between teaching and proselytizing. It is a significant difference and, in some countries where teaching a religion is permitted, but proselytizing is forbidden, the distinction is made in the law of the land. Proselytizing implies bringing undue pressure to bear upon someone to change his Faith. It is also usually understood to imply the making of threats or the offering of material benefits as an inducement to conversion.

The letter quotes Baha’u'llah from a passage in which He sets a standard of conduct for Baha’is:

Beware lest ye contend with any one, nay, strive to make him aware of the truth with kindly manner and most convincing exhortation. If your hearer respond, he will have responded to his own behoof, and if not, turn ye away from him, and set your faces towards God’s sacred Court, the seat of resplendent holiness. Gleanings from the Writings of Baha’u'llah, no. 128