that the Moshiach will suffer, and that He, the first to rise resurrection of the dead ones, will proclaim a light to the (Jewish) people and to the nations (of the world).
and the city need not have the sun, nor the moon, it to light up; because the glory of Hashem did shine over her, and the Lamb is her light. (Yeshayah 60, 19.)
the people, who was sat in the darkness, have seen a great light, and to those, who are sat in a land and in shadow of death, for them has a light dawned. (Yeshayah 9, 1-2)