The purpose of this world is to bring down holiness by removing and ultimately elevating materialism which is done in three stages. First, to remove the materialism to allow the holiness to come down. Second , is to engage in materialism and ultimately to use it as a vessel to bring down holiness. And the third ultimately to transform, the materialism itself. Moshe Rabenu, Avrohom Avenu and Moshiach all used the same donkey, which represents materialism, however, they each dealt with materialism in a different way, representing the three ways to bring down holiness. לקו״ש לא