The Baal HaTanya zt'l was in the beis medresh of the Magid of Mezritz zt’l and heard three people discussing the akeidah. "What is so special about this test? Wouldn’t every yid sacrifice their child if Hashem directly spoke to them and told them to do so?"
One answered that it's true that every Yid would do the same, but that's because Yidden are descendants of Avraham Avinu, and we inherited Avraham's devotion to Hashem. But Avraham was the son of Terach. He didn’t have ancestors to draw from. He had to reach this level on his own. That's the reason the akeidah is considered a very difficult test for Avraham.
A second person in the group wasn’t satisfied with this answer because when one is commanded directly from Hashem to do the akeidah, he would undoubtedly do the same, even without having a frame of reference or influence from his parents and ancestors. "In my opinion, the greatness of the akeidah is that Avraham performed it immediately, without delay. Hashem told Avraham to perform the akeidah, but He didn’t specify when it should be done. Technically, Avraham could have waited several years before bringing Yitzchak as a korban. But due to his burning love for Hashem, he didn’t wait — and that's the greatness of his deed."
Yet a third person was not satisfied with that answer either. He claimed that every Yid would also go immediately to do Hashem's will if they received this message directly from Hashem. "In my opinion, the greatness of Avraham is when the malach came to stop, he wasn't any happier than when Hashem told him to לעולה והעלהו, to sacrifice Yitzhak. This is the part of the akeidah that is so magnificent."
The Baal HaTanya noted that each of them spoke in accordance with the level they were on.
