In the Jewish tradition, God is the Compassionate and is invoked as the Father of Compassion: hence Raḥmana or Compassionate becomes the usual designation for His revealed word. (Compare, below, the frequent use of raḥman in the Quran). Sorrow and pity for one in distress, creating a desire to relieve it, is a feeling ascribed alike to man and God: in Biblical Hebrew, (“riḥam,” from “reḥem,” the mother, womb), “to pity” or “to show mercy” in view of the sufferer’s helplessness, hence also “to forgive” (Hab. iii. 2), “to forbear” (Ex. ii. 6; I Sam. xv. 3; Jer. xv. 15, xxi. 7). The Rabbis speak of the “thirteen attributes of compassion.” The Biblical conception of compassion is the feeling of the parent for the child. Hence the prophet’s appeal in confirmation of his trust in God invokes the feeling of a mother for her offspring (Isa. xlix. 15).
A classic articulation of the Golden Rule (see above) came from the first century Rabbi Hillel the Elder. Renowned in the Jewish tradition as a sage and a scholar, he is associated with the development of the Mishnah and the Talmud and, as such, one of the most important figures in Jewish history. Asked for a summary of the Jewish religion in the “while standing on one leg” meaning in the most concise terms, Hillel stated: “That which is hateful to you, do not do to your fellow. That is the whole Torah. The rest is the explanation; go and learn.” Post 9/11, the words of Rabbi Hillel are frequently quoted in public lectures and interviews around the world by the prominent writer on comparative religion Karen Armstrong.
Many Jewish sources speak of the importance of compassion for animals. Significant rabbis who have done so include Rabbi Samson Raphael Hirsch, Rabbi Simhah Zissel Ziv, and Rabbi Moshe Cordovero.