זוהר בראשית — דף עב ע”ב

The traveler explains that Jacob raised up the fallen stone and poured oil on it. Rabbi Yehuda kisses him and asks why he is engaged in business; he answers that he provides for his two sons, who study Torah. He explains “and I will see it, to remember the everlasting covenant”: the rainbow, which now appears in dark colors, will be adorned in luminous colors at the redemption, and his father said to look for the Messiah only then. It is then asked why Scripture says “the sons of Noah who went out of the ark,” and Rabbi Shimon speaks of the books of Enoch and Adam and of keeping teachings hidden. A mystical passage describes three sides, to which Shem, Ham and Japheth correspond.