'Itself' in the Bible

Dependent on Him, the whole body--its various parts closely fitting and firmly adhering to one another-- grows by the aid of every contributory link, with power proportioned to the need of each individual part, so as to build itself up in a spirit of love.

There was a time when you were nothing but darkness. Now, as Christians, you are Light itself.

But everything can be tested by the light and thus be shown in its true colors; for whatever shines of itself is light.