We were each born sitting in the darkness, heading towards the precipice of sin; but we didn’t even know it because we were blind. That’s how we each were found by Jesus Christ, when He saved us.
So at the moment of salvation, we are given spiritual sight as a gift from God. The Christmas story gives the clearest picture of how all humans appear in their unsaved state, from God’s perspective.
The Gospel is when Jesus Christ shines into our sin-darkened night life with a Sunrise of forgiven Life & saving Light.