Wonder when the post office will claim that it is incorrect to expect mailmen to carry envelopes that have explicit religious messages on the outside.
They have to read that message as they handle the mail (if it is near the address).
At what point does an envelope enter the "public" area? Post offices are government buildings. And YOU want to write graffiti on the envelope that does nothing to ensure that the letter gets to the addressee. You just want to promote your religous beliefs < /s >
Nope, I'd put it on the back side of the envelope, on the flap. It's a matter of religious freedom, as well as a matter of freedom of speech.