The book of Revelation chapter 11 mentions “two witnesses” that appear for a time, and then are killed and taken up to heaven. This could have been grouped with the modern/popular eschatology false teaching, but I wanted to call it out separately since it’s so widely distorted.
There is widespread speculation and fantastical conjurings of man as to the identify of these “two witnesses,” based in large part on “futurist” and so-called literal interpretations of the book of Revelation. I say so-called literal interpretations because despite making the claim to interpret all Scripture literally, they do so in an arbitrarily inconsistent and hypocritical manner, treating some Scripture literally while other Scripture is treated figuratively.
These “futurist” interpreters of Revelation proclaim that these “two witnesses” will be two literal men who stand in the literal streets of literal Jerusalem with literal fire coming out of their literal mouths. Others further proclaim that the two men will be Enoch and Elijah (or Enoch and Moses, or Moses and Elijah) returned from heaven again to earth. Such false interpretations are the result of treating symbolic biblical language literally.
Scripture states that it is by the mouth (testimony) of at least two (2) witnesses that all truth is to be established (Deuteronomy 17:6, 2 Corinthians 13:1). God has also always maintained at least two (2) witnesses to testify about His truth to man. In the Old Testament, they were the Law and the Prophets. In the New Testament age, there are also witnesses for God (and Christ), these are: The Word, The Spirit and the Church (for we are all witnesses of Christ). See John 15:26-27.
It is of these witnesses to which the book of Revelation is referring to in a symbolic manner, for the text even tells us who these witnesses are: “These are the two olive trees and the two lampstands that stand before the Lord of the earth.” One can therefore let Scripture interpret Scripture, and simply go read what Scripture tells about what the two olive trees and two lampstands represent (symbolically). Scripture defines these for us as The Holy Spirit and the Church.
As a side note, God has also provided a third witness for Himself at all times: nature (creation and the heavens, rains, food, etc., see Psalm 19:1-4, Romans 1:18-23, Acts 14:15-17).