¹⁷ By Emunah Avraham Avinu, when he underwent nisayon, offered up the Akedas HaYitzchak; and he who had received the Havtachot (Promises) was offering as a korban his Ben Yechid. [Yn 3:16]

¹⁸ This was Avraham Avinu, about whom it was said KI VEYITZCHAK YIKARE LECHA ZERA ("In Yitzchak will be called your seed" BERESHIS 21:12).

¹⁹ Avraham Avinu considered that Hashem was able to bring about the Techiyas HaMesim, from which he also received back Yitzchak as a tipus (type, pattern).