Major and Mrs . . .
If the letter/invitation is primarily to the reverend but also her husband: Rev. Mary Smith and Mr. John Smith If the letter/invitation is primarily to the husband but includes the wife: Mr. John Smith and Rev. Mary Smith If it is strictly a business letter and not church related: Mr. & Mrs. John Smith
Get this! Instead of putting Mr. you put......DR. I KNOW! CRAZY!!
Addressing letter for a husband and wife team:Mr. & Mrs. John DoeDrs. John and Jane DoePastors John and Jane DoeManagers, John and Jane Doe
You could address it to Reverend and Reverend Smith. The alternative would be the Reverends Smith.
What is the proper etiquette to addressing a Reverend in a letter?
The name followed by Jr For example: John Doe Jr
Mr and Mrs would be proper. Attorneys are typical written to as Mister.
This could be done in several ways. I believe the current best practice would be The Reverend and Mr. Smith.
Assuming a business letter to husband and wife with different last names who you don't know the proper business salutation is to have the the wife's name first before the husband's accompanied by the proper titles. For example: Dear Mrs. Thompson and Mr. Jones, (salutation on letter) Mrs. Susan Thompson and Mr. Jeremy Jones (address on envelope and letter) Note that you could use "Ms." instead of "Mrs." if you prefer, although I recommend that since in this example you know they are married I would choose "Mrs." Jim Lumley jimlumley@live.com
Depends. When used as a proper noun (e.g., as a title), it is. For example, "The shady man known as Pastor Bob secretly worshipped Satan after church services". "Pastor" is part of a proper noun, since it is used as a title. When used as a common noun, it isn't. For example, "At the church on the corner, there was a pastor known for worshipping Satan and giving out crack to children". It's not part of a proper noun in that instance, and would not be capitalize.
Begin with "Dear sirs".