Lamed begins the Hebrew words for both "learn" and "teach," and so encompasses the most Kabbalist of activities, study. Kabbalah has never been a path of pure sensation, but always has used study to goad us into higher consciousness.
Lamed initiates the Hebrew words for both "study" and "instruct," thereby covering most Kabbalistic practices. Consequently, Kabbalah has always relied on study as a catalyst for elevating human awareness.