Why can't the church be included in the tribulation judgments on Israel?
The church cannot be included because the tribulation is primarily God's dealing with the nation of Israel. The church is not under Israel's covenants; those covenants are Jew only, have nothing to do with Gentiles, and come to fruition in the tribulation.
Les teaches that the tribulation is primarily God dealing with the nation of Israel, and therefore the church cannot be run into God's dealing with His covenant people. The church is not under those covenants; they are Jew only, have nothing to do with the Gentile, and will finally come into fruition during the tribulation—the time of God dealing with Israel. He points to Jeremiah 30:5, where the voice is trembling and fear, not peace, and explains that the horrible events will be centered in the Middle East and directed primarily to the children of Israel.