THEY, pron. plu. objective case, them.
1. The men, the women, the animals, the things. It is never used adjectively, but always as a pronoun referring to persons, or as a substitute referring to things.
They and their fathers have transgressed against me. Ezekiel 2
They of Italy salute you. Hebrews 13
Blessed are they who hunger and thirst after righteousness. Matthew 5
2. It is used indefinitely, as our ancestors used man, and as the French use on. They say, on dit, that is, it is said by persons, indefinitely.
The King James Bible has stood its ground for nearly 400 years. However, during that time the English language has changed, and with it the meanings of some words it used. Here are more than 6,500 words whose definitions have changed since 1611.Wikipedia
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