1 John 1:7 But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin.

John 17:11 And now I am no more in the world, but these are in the world, and I come to thee. Holy Father, keep through thine own name those whom thou hast given me, that they may be one, as we are.

1 Peter 1:15-17 But as he which hath called you is holy, so be ye holy in all manner of conversation; Because it is written, Be ye holy; for I am holy. And if ye call on the Father, who without respect of persons judgeth according to every man’s work, pass the time of your sojourning here in fear:

Ephesians 5:14-16 Wherefore he saith, Awake thou that sleepest, and arise from the dead, and Christ shall give thee light. See then that ye walk circumspectly, not as fools, but as wise, Redeeming the time, because the days are evil.

Be seen as walking in the light. I have quoted these passages to speak as plainly as possible in His Word. Circumspectly means that the light presents sin in your path for you to avoid. Avoid sin as you would a mud puddle while wearing your best attire.

Our best witness is not in hiding our sins from others, it is in avoiding sin in the first place.