Ephesians 5:9-11 (KJV)
9 (For the fruit of the Spirit is in all goodness and righteousness and truth;)
10 Proving what is acceptable unto the Lord.
11 And have no fellowship with the unfruitful works of darkness, but rather reprove them.
Halloween Is Not Of God
The Lord is our light and our strength. If you desire to follow Him, then why not allow His light to expel the darkness in your life.