SECRET OF LIGHT is the First Episode (of Five) and serves as the introduction to the Ma’amer Basi L’Gani 5744 (1984), entitled "MY NAME...
מאמר ודוד עבדי תשל"ב Ma'amer on Vayigash http://www.he.chabad.org/library/article_cdo/aid/3140075
Ma’amer Chassidus: Parshat Terumah ~Ve'asu Li Mikdash~ 5743-1983 "Eternally Yours" Torah’s phraseology on the Mishkan indicates its eternity. But how can that be?