Kasyapa Munis first instruction to his wife was not to be envious. The general tendency of anyone within this material world is to be envious, and therefore, to become a Krsna conscious person, one must curb this tendency, as stated in Srimad-Bhagavatam (paramo nirmatsaranam). A Krsna conscious person is always nonenvious, whereas others are always envious. Thus Kasyapa Munis instruction that his wife not be envious indicates that this is the first stage of advancement in Krsna consciousness. Kasyapa Muni desired to train his wife to be a Krsna conscious person, for this would suffice to protect both her and Indra.