Revelation 11:3-5

Young's Literal Translation

³ and I will give to My two witnesses, and they shall prophesy days, a thousand, two hundred, sixty, arrayed with sackcloth;

⁴ these are the two olive [trees], and the two lamp-stands that before the God of the earth do stand;

⁵ and if any one may will to injure them, fire doth proceed out of their mouth, and doth devour their enemies, and if any one may will to injure them, thus it behoveth him to be killed.