Night visions and exile assurances[1]
ויאמר אלקים במראת הלילה ויאמר יעקב יעקב
G-d spoke in a night vision, and He said: “Yaakov, Yaakov”[2]
We don’t find that Hashem spoke to Avraham or Yitzchak in a night vision. We only find it in this instance with Yaakov, as well as when he had his famous dream about the ladder going to heaven. The reason is because in both instances he was ready and prepared to move to outside the land of Israel, to dwell there. The ladder case, when he was going to live with Lavan, and now, when he was going to live with Yosef in Egypt.