all who lived in Asia heard the word of the Lord

Here "all" is a generalization that means very many people throughout Asia heard the gospel. (See: rc://en/ta/man/jit/figs-hyperbole)

the word of the Lord

Here "word" stands for a message. Alternate translation: "the message about the Lord" (See: rc://en/ta/man/jit/figs-metonymy)