Berachoth, fol. 14, col. 1.
Gehinnom has seven names:—Sheol (Jonah ii. 2), Avadon (Ps. lxxxviii. 11), Shachath (Ps. xvi. 2), Horrible pit (Ps. xl. 2), Miry clay (Ps. xl. 2), the Shadow of death (Ps. cvii. 14), the Subterranean land.
Eiruvin, fol. 19, col. 1.
A dog in a strange place does not bark for seven years.
Ibid., fol. 61, col. 1.
Seven things were formed before the creation of the world:—The Law, Repentance, Paradise, Gehenna, the Throne of Glory, the Temple, and the name of the Messiah.
P'sachim, fol. 54, col. 1.
The Midrash Yalkut (p. 7) enumerates the same list almost word for word, and the Targum of Ben Uzziel develops the tradition still further, while the Targum Yerushalmi fixes the date of the origin of the seven prehistoric wonders at "two thousand years before the creation of the world."
Seven things are hid from the knowledge of a man:—The day of death, the day of resurrection, the depth of judgment (i.e., the future reward or punishment), what is in the heart of his fellow-man, what his reward will be, when the kingdom of David will be restored, and when the kingdom of Persia will fall.