Who knows one hundred sixty-eight?
Please cite/link your sources, if possible. At some point at least twenty-four hours from now, I will:
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168 years passed between the two wars that the Jewish People fought against a Yavin king of Chatzor. The first was in Yehoshua's times (Josh. ch. 10), in the year 2488; the second was Devorah and Barak's battle (Jud. chs. 4-5 - last week's haftarah), in 2656.
(Incidentally, both of these battles also featured Hashem orchestrating supernatural celestial displays: the hailstones, and the sun standing still, the first time around; and "the stars in their courses" fighting against the Canaanite army the second time.)
In the Tur Yoreh Deah, Siman 168 is missing.
See also: What happened to Siman 168?
(I saw Double AA's comment there, and gave Shmuel Brin a whole day to come post this, but he never did, even though i saw that he logged on since then...)
Yitzchok was 168 years old when Yosef was sold to Mitzrayim.
Yaakov was 91 when Yosef was born, Yitzchok was 151 when Yosef was born. 151 + 17 = 168
There are 168 sins for which the primary punishment is lashes. Source: Rambam, Sanhedrin 19.