This is the 12179th most frequent Swedish word.
rättfärdighetens
"Rättfärdighetens" means "the righteousness" in English.
In this sentence, 'rättfärdighetens' is the definite genitive form of 'rättfärdighet', indicating something belonging to or related to righteousness, such as a path associated with it.
Genom rättfärdighetens väg finner vi fred.
Through the path of righteousness, we find peace.
Here, 'rättfärdighetens' is used to indicate possession, attributing the 'kraft' (power) to righteousness.
Rättfärdighetens kraft är starkare än ondskans.
The power of righteousness is stronger than that of evil.
In this instance, 'rättfärdighetens' describes the entity being defended, again showing possession or association with righteousness.