The Zohar teaches that Sarah represents the body, whereas Avraham represents the soul. Even after death, the soul still remains related to the body, thus "Avraham - the soul - came to eulogize Sarah - the body - and to weep for her" [Chayei Sarah 23:2]
Chassidic teachings emphasize the importance of the body as a tool in the service of G-d. Since the ultimate purpose of creation is to sanctify the physical world, the body has a distinct advantage over the soul, in that it is the means by which G-d's Will is enacted. Therefore, G-d told Avraham [the soul] "Whatever Sarah - the body - tells you, listen to her voice" [21:12], indicating that there is an inherent superiority to the body, over the soul.
Although the soul is incomparably more refined than the body, nevertheless, in the times of Moshiach we are promised that the superiority of the body will be revealed such that "the soul will be animated by the body".
Based on Likutei Sichos Lubavitcher Rebbe