The father who defends his children
The Gemara relates that in the future Hashem will tell Avraham, and then Yaakov, that their children have sinned, and neither will plead for them. Then He will tell Yitzchak. Yitzchak will answer: are they my children and not Yours? At Sinai You called them "My firstborn son." He will then reckon how little time a person truly has to sin, offer to carry half the burden himself, and finally point to the Akeidah, when he offered his own life. The people will say to him, "You are our father," and Yitzchak will point them upward to Hashem, our true Father and Redeemer.
Source: Shabbos 89b
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