Hosea 4:6

You will often find 66 or 33 banded about. 33 was the age that Jesus Christ was crucified (Russell Brand has the number 33 as a tattoo) and 66 is the number associated with master masons. For example there are 66 books in the current Bible.

6 My people are destroyed for lack of knowledge: because thou hast rejected knowledge, I will also reject thee, that thou shalt be no priest to me: seeing thou hast forgotten the law of thy God, I will also forget thy children.