Who will the two witnesses primarily witness to in Jerusalem?
The two witnesses will primarily witness to the Jewish nation. Their testimony is directed to Israel, and out of that witnessing the 144,000 young Jews will come on the scene. This fits Israel's expectation of Messiah and restored temple worship.
Les teaches that as the two witnesses make their appearance, picked up in Revelation chapter 10, they will be witnessing primarily to the Jewish nation. Out of that witnessing, Les feels the 144,000 young Jews will come on the scene. This occurs in the setting of Israel's anticipation: temple worship will come back, Israel will have her temple for the first three and a half years, and the Antichrist will put his stamp of approval on it. Israel is looking for Messiah, though not recognizing that Christ was the Messiah.