This is the second Ma’amar on this Possuk. In this one the Rebbe develops many new ideas (based on the Tzemach Tzedek’s notes) on the “old theme” of ועבדי דוד.
He brings a Gemara that speaks of קיסר ופלגי קיסר Moshiach and an assistant,
He also speaks of משה הוא גואל ראשון הוא גואל אחרון vs. משה גואל ראשון ומשיח גואל אחרון.
He explains both of these ideas with the argument that this is not two people but two ideas in the same person.
Two ideas in Moshiach: One he is a king, two he is Torah, a Redeemer etc.
This is (being taught) as the third Ma’amar in a Hemshech. MP3