What does purity really mean?
pu·ri·ty-noun-
1. freedom from guilt or evil; innocence.
2. physical chastity; virginity.
3. freedom from foreign or inappropriate elements; careful correctness: purity of expression.
4. Optics. the chroma, saturation, or degree of freedom from white of a given color.
5. cleanness or spotlessness, as of garments.
Ecclesiastes 9:8
Let your garments be always white with purity, and let your head not lack the oil of gladness.
Thessalonians 4:7
For God has not called us to impurity but to consecration to dedicate ourselves to the most thorough purity.
Timothy 4:12
Let no one despise or think less of you because of your youth, but be an example pattern for the believers in speech, in conduct, in love, in faith, and in purity.
Mark 7
18 And he said to them, "Then are you also without understanding? Do you not see that whatever goes into a person from outside cannot defile him,
19 since it enters not his heart but his stomach, and is expelled?" (Thus he declared all foods clean.) 20 And he said, "What comes out of a person is what defiles him. 21 For from within, out of the heart of man, come evil thoughts, sexual immorality, theft, murder, adultery, 22 coveting, wickedness, deceit, sensuality, envy, slander, pride, foolishness. 23 All these evil things come from within, and they defile a person."
Ephesians 5
Husbands, love your wives, just as Christ also loved the church and gave Himself up for her, 26 so that He might sanctify her, having cleansed her by the washing of water with the word, 27 that He might present to Himself the church in all her glory, having no spot or wrinkle or any such thing; but that she would be holy and blameless.
Titus 2:7
And show your own self in all respects to be a pattern and a model of good deeds and works, teaching what is unadulterated, showing gravity having the strictest regard for truth and purity of motive, with dignity and seriousness.