But we have this treasure in earthen vessels, that the excellency of the power may be of God, and not of us. The treasure that Paul spoke of was the word of God, the light that would shine in the hearts of all men who believe in the Lamb who had now come, that He was indeed God come in the flesh. And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil. For every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved. But he that doeth truth cometh to the light, that his deeds may be made manifest, that they are wrought in God.
Some men love the darkness.
Some do not want the strong man bound. Some do not want the kingdom of God within them, and in their rebellion, keep the door open for the evil one to continue to lead them by his temptations to carry out his wishes. To take the darkness he'd deceived man into accepting and bring it to an open manifestation for all the world to see, bringing upon this earth a time of deep darkness. It is the Holy Spirit in us who brings us out of darkness into the light of Christ through the word of God. God has His Kingdom within us, a Kingdom that will be visibly manifested when Jesus Christ, the King of kings and Lord of lords, returns.