'Nothing' in the Bible

until we all reach oneness in the faith and in the knowledge of the Son of God, [growing spiritually] to become a mature believer, reaching to the measure of the fullness of Christ [manifesting His spiritual completeness and exercising our spiritual gifts in unity].

There was a time when you were nothing but darkness. Now, as Christians, you are Light itself.

and have nothing to do with the unfruitful actions that darkness produces. Instead, expose them for what they are.