The two witnesses are two olive trees and two lampstands (Rev 11:4).
Have you ever considered that the two witnesses described in Rev 11 might be the Old Testament and New Testament?
Each is an olive branch, each is a lampstand. And each gives testimony. And yes the nations tried to destroy them, but ultimately the Word exploded back to life in the Reformation.
Act 1:6 When they therefore were come together, they asked of him, saying, Lord, wilt thou at this time restore again the kingdom to Israel?
Act 1:7 And he said unto them, It is not for you to know the times or the seasons, which the Father hath put in his own power.
The 2 witnesses are 2 men that turn Israel as a nation to the truth that Jesus is their Lord and Savior because God is going to restore the kingdom to Israel.
Eze 39:21 And I will set my glory among the heathen, and all the heathen shall see my judgment that I have executed, and my hand that I have laid upon them.
Eze 39:22 So the house of Israel shall know that I am the LORD their God from that day and forward.
Eze 39:23 And the heathen shall know that the house of Israel went into captivity for their iniquity: because they trespassed against me, therefore hid I my face from them, and gave them into the hand of their enemies: so fell they all by the sword.
Eze 39:24 According to their uncleanness and according to their transgressions have I done unto them, and hid my face from them.
Eze 39:25 Therefore thus saith the Lord GOD; Now will I bring again the captivity of Jacob, and have mercy upon the whole house of Israel, and will be jealous for my holy name;
Eze 39:26 After that they have borne their shame, and all their trespasses whereby they have trespassed against me, when they dwelt safely in their land, and none made them afraid.
Eze 39:27 When I have brought them again from the people, and gathered them out of their enemies' lands, and am sanctified in them in the sight of many nations;
Eze 39:28 Then shall they know that I am the LORD their God, which caused them to be led into captivity among the heathen: but I have gathered them unto their own land, and have left none of them any more there.
Eze 39:29 Neither will I hide my face any more from them: for I have poured out my spirit upon the house of Israel, saith the Lord GOD.
God will bring the whole house of Israel back to their land and leave none of the Jews in the nations anymore, and they shall know the LORD their God from that day and forward, and He will never hide His face from them again which they will be in the truth and never stray again.
This is a future prophesy for Israel as a nation is not in the truth.
When the nations come together with a global government the Gentile nations will make all Jews go back to their land and then three and one half years later God will send 2 witnesses to them to turn them to the truth.
Rom 11:25 For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in.
Rom 11:26 And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
Rom 11:27 For this is my covenant unto them, when I shall take away their sins.
Rom 11:28 As concerning the gospel, they are enemies for your sakes: but as touching the election, they are beloved for the fathers' sakes.
Rom 11:29 For the gifts and calling of God are without repentance.
Israel is blinded in part until salvation is no longer available to the Gentiles so all Israel shall be saved which the kingdom on earth will be restored to Israel.
That is the purpose of the 2 witnesses to turn Israel to the truth.
Zec 4:11 Then answered I, and said unto him, What are these two olive trees upon the right side of the candlestick and upon the left side thereof?
Zec 4:12 And I answered again, and said unto him, What be these two olive branches which through the two golden pipes empty the golden oil out of themselves?
Zec 4:13 And he answered me and said, Knowest thou not what these be? And I said, No, my lord.
Zec 4:14 Then said he, These are the two anointed ones, that stand by the Lord of the whole earth.
Rev 11:3 And I will give power unto my two witnesses, and they shall prophesy a thousand two hundred and threescore days, clothed in sackcloth.
Rev 11:4 These are the two olive trees, and the two candlesticks standing before the God of the earth.
They are 2 literal men.
Rev 11:5 And if any man will hurt them, fire proceedeth out of their mouth, and devoureth their enemies: and if any man will hurt them, he must in this manner be killed.
Rev 11:6 These have power to shut heaven, that it rain not in the days of their prophecy: and have power over waters to turn them to blood, and to smite the earth with all plagues, as often as they will.
Rev 11:7 And when they shall have finished their testimony, the beast that ascendeth out of the bottomless pit shall make war against them, and shall overcome them, and kill them.
Rev 11:8 And their dead bodies shall lie in the street of the great city, which spiritually is called Sodom and Egypt, where also our Lord was crucified.
Rev 11:9 And they of the people and kindreds and tongues and nations shall see their dead bodies three days and an half, and shall not suffer their dead bodies to be put in graves.
Rev 11:10 And they that dwell upon the earth shall rejoice over them, and make merry, and shall send gifts one to another; because these two prophets tormented them that dwelt on the earth.
Rev 11:11 And after three days and an half the Spirit of life from God entered into them, and they stood upon their feet; and great fear fell upon them which saw them.
Rev 11:12 And they heard a great voice from heaven saying unto them, Come up hither. And they ascended up to heaven in a cloud; and their enemies beheld them.
It is obvious that they are 2 men from these scriptures for they die and rise again, and ascended up to heaven.