I think you need to check out Romans. Specifically: Romans 3:1-28 for starters. NOWHERE does it say that God’s Holy Spirit indwells unbelievers. He does not. He indwells the believer ONLY. I think you are getting the concept of man’s being made in the image of God confused with some kind of idea of natural holiness that man possesses. As the above verses (among many many others in Scripture) point out, mankind is naturally wicked. He is NOT “holy” in any sense of the word. Hence, mankind’s need for a Savior who is. Any “good” mankind thinks he’s doing apart from Christ is “as filthy rags” (Isaiah 64:6). Christ’s promise of His Spirit is to the believer only (See Luke 24 for the account of Christ’s resurrection and this promise.)
So sad to see that you deny the light of truth, the foundation that only Christ could have laid.
1Cr 3:10-15
By the grace God has given me, I laid a foundation as a wise builder, and someone else is building on it. But each one should build with care. For no one can lay any foundation other than the one already laid, which is Jesus Christ. If anyone builds on this foundation using gold, silver, costly stones, wood, hay or straw, their work will be shown for what it is, because the Day will bring it to light. It will be revealed with fire, and the fire will test the quality of each person’s work. If what has been built survives, the builder will receive a reward. If it is burned up, the builder will suffer loss but yet will be saved—even though only as one escaping through the flames.
Do you deny that the light of truth (spirit) which was laid by Christ himself does not exist. Perhaps you might consider that the Counselor that Jesus promised helps bringing the light to light so that it no longer shines in darkness. Hence being born again.
If this is not the case, then how is it that the truth/light shines in total darkness?