The inexhaustible richness of this Sacrament is Expressed in the Different names we give it. Each name evokes certain aspects of it. It is called: Eucharist, because it is an action of Thanksgiving to God. the Greek words eucharistein 139 and eulogein 140 recall the Jewish Blessings that proclaim - Especially during a meal - God's works: Creation, Redemption, and sanctification.