Paul Wilson (26 Oct 2011)
"Do the 144,000 Really Minister"

I read over revelation and it mentions the sealing of the 144,000 but I am not seeing that they are to minister to people on earth. Can someone please point out to me the verses that speak of their commission (witnessing to the world)?????
Also in Strong's the word Sion in re 14 could be talking about the mount on earth not heaven so are we sure they are raptured??? I just don’t understand WHY they would be raptured when they have the seal of God on them to protect them. They should be protected from anything harming them even judgment.