Luminous objects such as flashlights emit light that we can see. how do we see an object that isnt luminous?

In order for us to see an object that is non-luminous, it must reflect some of the light it receives from a luminous source, such as the Sun. Most of the objects we see, such as cars, clouds or even the Moon, are not luminous; it is just that they reflect sunlight

The answer is true for your question.

It was necessary to redeem the world and he knew that his son was the only way