This phrase here refers to the temple courtyard, not to the temple building where only the priests were allowed. Alternate translation: "in the temple courtyard" (See: [[rc://en/ta/man/translate/figs-explicit]])
The word "words" here is a metonym for the message that the apostles had already proclaimed. Possible meanings are 1) "all this message of eternal life" or 2) "the whole message of this new way of living" (See: [[rc://en/ta/man/translate/figs-metonymy]])