Self love or love for God
" Those who consciously love God in their hearts never lose an intense longing for spiritual illumination, until they feel it in their bones and no longer know themselves but are completely transformed by the love of God. They are both present in this life and not present. They live in the body, but have departed from it, as through love they ceaselessly journey in their souls towards God. Their hearts constantly burn with the fire of love and they cling to God with an irrestible fervor, for they have, once and for all, transcended self-love in their love for God." St Diadochos of Photiki.