What is impurity? In the Oxford English Dictionary we read that impurity is ‘a constituent which impairs the purity of something’. Therefore, for instance, if the olive oil contains certain substances it will be called impure. But you must not avoid this kind of impurity, because you can eat an impure olive oil (I mean an olive oil which has been altered with harmless substances). The impurity which you must avoid is something that is able to defile you spiritually and causes you to lose the purity of your heart and of your body. Therefore, you must avoid impure thoughts, impure talks, impure behaviours, impure readings. In other words, you must avoid all kinds of obscenities, any thing which may offend the sense of decency. By so doing you will keep yourselves pure and blameless at the coming of the Lord. “Blessed are the pure in heart, for they shall see God” (Matthew 5:8 - NKJV) said Jesus. Therefore, having this promise (which was made by the Lord), “let us cleanse ourselves from all filthiness of the flesh and spirit ….” (2 Corinthians 7:1 – NKJV).