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Note the Biblical teachings of Matthew 18:7 and Luke 17:1. Matthew 18:7 states: “Woe to the world because of offenses! For offenses must come, but woe to that man by whom the offense comes!” By exposing our nakedness to those of the opposite sex to whom we are not married and who are not a God-approved exception, we are tempting them to lust after us with their eyes, thoughts and imaginations. Even if they resist lust, we are still tempting them to sin.
Read the broad Biblical command of 1 Timothy 6:22: “Do not…share in other people’s sins; keep yourself pure.” If a woman or man exposes his/her nakedness and this leads to a person to whom they are not married, to lust after him/her, this is the sin of sharing in other people’s sins. [InternetBibleCollege.Net]