"But as he which hath called you is holy, so be ye holy in all manner of conversation; Because it is written, Be ye holy; for I am holy" (1 Peter 1:15 - 16).
Today people are willing to debate how a Christian should behave. This is something that has never happened in the past 2,000 years since Calvary. Instead, the way that a person was to live a pure, holy life was simply assumed.