“Rabbi Eliezer expounded: ‘I shall recall My covenant with Jacob…’ (Leviticus 26:42): Consider this: The Patriarchs’ prayers ensure the world’s survival. All mankind depend on the Patriarchs for their existence. Forever and ever, Patriarchal merit shall not be forgotten, for Patriarchal merit guaranties the survival of the celestial and terrestrial universe. And the greatest survival is ensured by Jacob. Therefore, when Jacob’s children are in trouble, G-d shows Himself the likeness of Jacob and then shows the world mercy. As it says, ‘I shall recall My covenant with Jacob.
Our sages ask: ”How did Isaac know the scent of “the field blessed by G-d”? However, explains the Zohar: ”These are two which are one”. It says in one place:” And Isaac went out in the evening “(Gen. 24:63).
Sarah's First Connection to the Cave of Machpelah:
According to our sages, even the Matriarch Sarah had a very special connection to the Cave of the Machpelah; unfortunately, her hopes about the Cave did not materialize during her lifetime:
Commonly, our sage elaborate on Jacob’s connection to the Cave of the Machpelah from another perspective: The Cave’s effect on the completion of the world and the return of the light to the Cave after Jacob’s burial. It also serves as a gateway for the righteous who have departed this world and are going to the next. So we find in the Zohar:
The first time Abraham entered The Machpelah Cave he saw a light and two graves were revealed to him. At that time Adam looked at Abraham and his expression was that of happiness. Hence Abraham knew that he was destined to be buried there.