For eternity, the Word of God (Jesus Christ) SHINES and the darkness does not overcome it.
Through time and God's love, all humans are sustained by Him.
Even though the Spirit of God does not remain with fallen flesh forever, in spirit, all humans can stay WITH God -- with the Word of God -- in every moment, if they choose.
Jesus Christ's will supercedes the darkness. We can choose to align with the Word of God, knowing Him through our spirit. In every moment. Now.
This is what it means to overcome.
And the light shineth in darkness; and the darkness comprehended (Gk. katalambanō, Strong's G2638) it not.
In context, John 1:1-5, 9-13:
In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made. In him was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
...That was the true Light, which lighteth every man that cometh into the world. He was in the world, and the world was made by him, and the world knew him not. He came unto his own, and his own received him not. But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name: Which were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.
If you're spiritually struggling with something or are a troubled Christian and would like to talk, I offer my time freely to encourage others in their own walk with God, Jesus Christ and the Holy Spirit. Send me a message through the contact form at my website below and we can schedule a conversation.