Vague allusions to the resurrection of the dead exist in the Torah. More substantial ones are found in Yeshayahu and Yehezkel. Daniel is the first to mention the resurrection explicitly. The Torah’s war against murder and human sacrifice may be the reason the Torah hid the concept of resurrection in the fear that it might minimize the severity of these sins. However, sacrificing one’s life to sanctify God’s Name that Daniel and his companions introduce in advance of the religious wars waged against the Jews by the Greek empire necessitated the stressing of this concept. The resurrection and other principles of faith that were not existent in an immediate reality needed to be transferred in Oral Law and not in the Torah.

Courtesy of the Virtual Beit Midrash, Yeshivat Har Etzion