Kabbalah zu Bereschit 11:28

What is written before the verse, "Hashem said to Abram..."? The words, "And Haran died before his father Terah" (Gen. 11:28). What does he want to inform us? (During his father's lifetime) this cannot be, for had he no other person until that day died during his father's lifetime beside Haran? When Abraham was thrown to the fire, Charan was killed. Because of this, they left Ur of the Chaldeans...