We know that Salman al Farsi (RA) and other people, looked for the seal/symbol of the Prophet on his back, before accepting Islam. Now the question is, how did they know to look for it? Let’s see the Shama’il, about an account of Salman’s story, mentioned by Buraydah:
“He had seen the signs of Sayyidina Rasullullah (Muhammed Sallalahu alaihi wa sallam) in the books of previous Prophets that he will not accept sadaqah, but shall accept presents and gifts, and the seal of Prophethood will be between his two shoulders after witnessing the first two signs). He then saw the ‘Seal of Prophethood’ on the back of Sayyidina Rasullullah (Muhammad Sallallahu alaihi wa sallam) and embraced Islam.”
So I asked Ali Ataie about a verse in the Bible which talks about a person to be born (as it talks about “will be”) with a symbol on his shoulder/back, and he said:
“Isaiah 9:6...the Hebrew "vat-hi ham-misrah 'al-shikhmo" literally, "the symbol of dominion will be upon his shoulder." The seal of the Prophet (s) was directly behind his heart which means that it was more oriented towards the left. This could refer to the extreme right portion of his left shoulder blade- which is also his back. The hadith of Imam Ali says "bayna katifayhi," between his shoulders - but I don't think that this negates the blade of the shoulder. Allahu 'Alim.
I just checked the Lexicon Strongs' Concordance and the Hebrew word shekhem can be translated as "back" as well. In Psalm 21:12, it is translated as "back" in the King James.”
So there you go, Alhamdulillah for the blessings of Islam. We find another proof for the Prophet Muhammed (Sallallahu alaihi wa sallam) in the Bible. Here’s some more on the topic by Ali Ataie http://www.youtube.com/watch?v=lzYzBuh7aCk