I would not call it a resurrection, but a coming back to life. A resurrection to me is someone who's body is in the grave. I think the person's soul will go to hell for a couple of days, while his dead body will be in a open casket as the world views him being dead, but suddenly sits up back to life while the global cameras are on him.
Revelation 13:3 And I saw one of his heads as it were wounded to death; and his deadly wound was healed: and all the world wondered after the beast.
It is not a mountain that is mortally wounded by a sword, but a person.
No, scripture says it's a mountain. It's an area of land where there was a very bad war but the people there survive and the kingdom(s) within that area of land recover. This thing about a man dying from a head wound is fiction based on bad exegesis of Rev 13 (and 17).
Rev 17:9 And here is the mind which hath wisdom.
The seven heads are seven mountains, on which the woman sitteth.
ὄρος
oros
or'-os
Probably a from an obsolete word ὄρω orō (to rise or “rear”; perhaps akin to G142; compare G3733); a mountain (as lifting itself above the plain): - hill, mount (-ain).
In order to understand what these are we have to know what a mountain in prophecy symbolizes:
Rev 8:8 And the second angel sounded, and as it were a great mountain burning with fire was cast into the sea: and the third part of the sea became blood;
Barnes:
And as it were a great mountain - A mountain is a natural symbol of strength, and hence becomes a symbol of a strong and powerful kingdom; for mountains arc not only places of strength in themselves, but they anciently answered the purposes of fortified places, and were the seats of power. Hence, they are properly symbols of strong nations. “The stone that smote the image became a great mountain, and filled the whole earth,” Dan_2:35. Compare Zec_4:7; Jer_51:25. We naturally, then, apply this part of the symbol to some strong and mighty nation - not a nation, necessarily, that issued from a mountainous region but a nation that in strength resembled a mountain.
Clarke:
Revelation 8:8
Mountain, in prophetic language, signifies a kingdom; Jer_51:25, Jer_51:27, Jer_51:30, Jer_51:58. Great disorders,
So a mountain can be a kingdom or a place of strength. This beast is composed of 7 mountains but has ten kings and kingdoms within. This means a mountain is either a single kingdom or is more than one kingdom within a single mountain being that there are ten kingdoms fitting into these 7 mountains so some mountains must have more than one kingdom. Mountains then would be areas of the world where a kingdom or more exist. Everything about this beast suggests a global reign and the world is divided into 7 continents so it makes sense to think of the world divided into ten kingdoms that span the 7 continents or mountains of the Earth.