Thank you for thoughts. Because of looking into this, I have come across some great verses. I recommend going to <http://www.eliyah.com/lexicon.html> and search on the word covenant. This takes you to <blueletterbible.org> where you will be given every verse with covenant in it. I don't go directly to blueletterbible because I have found it difficult to get the advanced feature which shows every Strongs listing for each word. I navigated to the NT listings and was able to see the corresponding Strongs greek listing. Yes, in Hebrews 8:7, 8:13, and 9:1, the word covenant was added. But 8:6, 8:9 and 8:10 do have the greek word for covenant. Reading from 8:6 to the end of the chapter, in context, the subject these verses are dealing with are the old vs. the new covenants, IMO. To me inserting "priesthood" in verses 7 and 13 do not make sense.