In Rutherford's Survey of Spiritual Antichrist, there is a typo not corrected in the errata. R is interacting with 1 Corinthians 8:4-7 and writes, "The meaning of that, an idol is nothing, is, or is vanity, as the prophets say...." If it were not for "as the prophets say" I would go with dropping the redundant "is" for the reading. Is there an appropriate Hebrew word or words he might have been intending to adduce after the first "is" and the printer or he left it out?