Numerology. 1  Chaldean Numerology. The numerical value of combined joint special operations task force in Chaldean Numerology is: 7. 2  Pythagorean Numerology. The numerical value of combined joint special operations task force in Pythagorean Numerology is: 5.
The short answer is no. Itâs unusual to put a comma before because. You only do it when you need the comma to prevent confusion because your sentence could have two meanings. The Chicago Manual of Style has an excellent entry on this topic in its Q&A section online. It gives the example.
(edit, so this isn't a terrible answer if you edit your question) In the case of greetings such as the ones you wrote in your question, yes, a comma is necessary. In some cases, though, such as the greeting Dear John at the beginning of a letter, there is no comma before the name, but rather after.