Mark 8:38

For whoever is ashamed (here and now) of Me and My words in this adulterous and sinful generation, the Son of Man will also be ashamed of him when He comes in the glory of His Father and the holy angels. 

If a believer is ashamed of Jesus and the Word, they don’t see the light that leads away from sin. Sin is no respecter of persons and inclusive of all and does not lead a person away from error but deeper. The righteous oppose sin, reject its temptation, and turn away from its influence, which leads out of sin.