By closely examining Avraham's life story from Lekh Lekha until the Akeida we can notice that while Avraham's first tests challenged him to part with the past or present in light of his future; his last test forced him to part with that future as well. His willingness to complete the task proved him to be one singularly focused on the service of God and the glorification of His name.

Courtesy of the Virtual Beit Midrash, Yeshivat Har Etzion