Nelson Walters takes a Sherlock Holmes approach to Scripture to determine the Who, What and When of the Two Witnesses of Revelation 11. He does a thorough and credible job of proving that Moses and Elijah are the best two candidates. You will need almost an hour to watch the video. Can I suggest you view it with your Home Group, so that you can discuss it further. You will all benefit from hearing each others take on the video. Also, please let me know what you conclude. I must admit Nelson convinced me of the identity of the two witnesses. I will need to spend more time on the exact timing of their ministry.