When people accept Jesus as Lord and Savior, repent, and turn from sin they become the temple of God. God had 2 physical temples that were destroyed, but because of what Jesus did we are now spiritual temples that can't be destroyed. The mission of the two witnesses is to build the temple of God. How do you build the spiritual temple of God? You tell people the good news(gospel) of what Jesus did so that they may be saved and become a temple, and all the temples combined are one temple for all are one in Jesus Christ. If you read the book of haagai and zechariah it shows joshua and zerubbabel building the temple. These two books show the two witnesses in the end, those books show the physical rebuilding after the destruction of Israel but the two end times witnesses rebuild the spiritual temple, same story just spiritual instead of physical. So if someone is promoting themselves and calling people idiots, stupid and such they are not building the temple of God they are tearing it down. Look at yourself and see are you building the temple of God by telling others of Jesus or are you tearing down the temple by promoting yourself and not even mentioning Jesus? Accept Jesus as savior today, become a temple, and encourage others to be part of the kingdom.