Revelation 11 takes us to Zechariah 4 where
the two olive trees and candlesticks are first
mentioned in the Bible.

The words, "They are the two anointed ones
that stand by the Lord of the whole earth"
shows that these were persons in existence
at that time. Who are these witnesses that
were alive 2500 years ago, and today are
evidently still alive, and will be ministering
in Jerusalem at the end of the age?