The bible makes it VERY clear that it is two flesh-and-blood MEN who are the witnesses. A beast "makes war" with them, killing them. People around
the earth are so happy they are dead, that they start giving gifts to each other. They prevent the bodies from being buried, and are left to rot in
the streets. After 3 days, the bodies come back to life, and ascend to heaven. (Most probably, while being broadcast on Fox and CNN).
My two personal favorites for the witnesses are Enoch and Elijah.