1 Peter 1:15,16 (KJV)
15 But as he which hath called you is holy, so be ye holy in all manner of conversation;
16 Because it is written, Be ye holy; for I am holy.
As Christians, we stand apart from others in this world, for God is with us. He is our guide and helps us resist temptation.
When Jesus is with me, there is no wickedness inside of me but only goodness. It is when I stop seeking Him that I fall into sin.