Isaac
Jewish views

In rabbinical tradition, the age of Isaac at the time of binding is taken to be 37, which contrasts with common portrayals of Isaac as a child. The rabbis also thought that the reason for the death of Sarah was the news of the intended sacrifice of Isaac. The sacrifice of Isaac is cited in appeals for the mercy of God in later Jewish traditions. The post-biblical Jewish interpretations often elaborate the role of Isaac beyond the biblical description and primarily focus on Abraham's intended sacrifice of Isaac, called the aqedah ("binding"). According to a version of these interpretations, Isaac died in the sacrifice and was revived. According to many accounts of Aggadah, unlike the Bible, it is Satan who is testing Isaac as an agent of God. Isaac's willingness to follow God's command at the cost of his death has been a model for many Jews who preferred martyrdom to violation of the Jewish law.

According to the Jewish tradition, Isaac instituted the afternoon prayer. This tradition is based on Genesis chapter 24, verse 63 ("Isaac went out to meditate in the field at the eventide").

Isaac was the only patriarch who stayed in Canaan during his whole life and though once he tried to leave, God told him not to do so. Rabbinic tradition gave the explanation that Isaac was almost sacrificed and anything dedicated as a sacrifice may not leave the Land of Israel. Isaac was the oldest of the biblical patriarchs at the time of his death, and the only patriarch whose name was not changed.

Rabbinic literature also linked Isaac's blindness in old age, as stated in the Bible, to the sacrificial binding: Isaac's eyes went blind because the tears of angels present at the time of his sacrifice fell on Isaac's eyes.
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