Jakob named two patriarchal witnesses in one breath. Unless the God of my father, the God of Abraham, and He whom Izhak feareth had been in my help, even now hadst thou sent me away empty (Genesis 31:42).
Targum Pseudo-Jonathan preserves the striking title: He whom Izhak feareth. Abraham knew God by love. Isaac knew Him by awe. Both were present at Jakob's back. Both had kept him from leaving Laban's house with nothing but his walking staff.
And then the decisive sentence: my affliction and the travail of my hands are manifest before the Lord, and therefore He admonished thee in the evening. Jakob connected the dots for Laban in public. The angel's visit the night before had not been a random intrusion. It had been a heavenly response to twenty years of quietly endured wrong.
The Maggid teaches: the affliction you swallow in silence does not disappear. It rises. Abraham's God and Isaac's Awe stand behind the one who refuses to fight dirty — and when the hour comes, they admonish the oppressor in his own dreams.