It is a broad word that covers sexual immorality in all its forms. It bans living together before marriage. It bans all kinds of pornography including internet porn. It bans homosexual behavior. All of these trends are powerful forces in today's culture.
Sexual temptation is very strong in our day and age.
I think our society struggles with it more than previous societies for five reasons. First, the breakdown of the traditional family lays us open to sexual instability and temptation. We need to begin realizing that there is a sense in which our television sets are very often the devil's evangelists, designed to subtly persuade us of a philosophy of life that is exactly counter to the teachings of Scripture. Third, the loss of our traditional Judeo-Christian framework of morality over the past fifty years or so in the Western world makes us vulnerable. Fifth, our technology today gives us easy access any kind of indulgence we desire.