The literary term you are looking for is paradox. A paradox is a statement that seems contradictory but may be true when viewed from a certain angle. In the given quote, the paradox lies in the idea that in the earthly world, harming can be praised while doing good can sometimes be seen as unacceptable.
He was 33 years old on his earthly life. But we must remember he is ageless really.
"Twilight", in poetic and literary usage, means "the end stage", or very near the end. The "twilight of one's earthly existence" means any time from very late in life to the moment of death. 2 - The "twilight of your earthly existence" term means that a person is closer to the end of their life as opposed/compared to being in the 'Dawn' of life which indicates an earlier time in life .
It was a earthly planet
Earthly Possessions was created in 1999.
Earthly Love was created in 1974.
Earthly Powers was created in 1980.
No Earthly Connection was created in 1976-05.
The duration of Earthly Possessions is 1.72 hours.
Earthly Powers has 678 pages.
The Future of Earthly Delites was created in 1996.
This Earthly Spell was created on 2008-03-10.
A Garden of Earthly Delights was created in 1967.