How do you feel when your clothes are dirty? Have you ever been in a situation when you didn’t have a clean pair of clothes for a more than one day? When you get a shower and put on clean smelling clothes, don’t you feel better. The same is with our sin. We feel better when we get rid of it and clothe ourselves clean. God makes us a new creature in Him. We put of the old things and put on the new.

That ye put off concerning the former conversation the old man, which is corrupt according to the deceitful lusts;
And be renewed in the spirit of your mind;
And that ye put on the new man, which after God is created in righteousness and true holiness
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Ephesians 4:22-24