Most often, it is deciphered through A) context clues. Some people, however, choose to decipher them through B) pronoun references. Just to be on the safe side, I'd choose A) context clues because most often, the words that are being deciphered are they themselves the pronoun.
Archaic language can usually be deciphered through the use of context clues. The use of context clues is one of the best ways in which we can figure out what the meaning of a particular word is. Context clues allow us to infer the meaning of a word due to the words that surround it. This is a useful tool when we do not know a word and we do not have a dictionary at hand.
