Possible meanings are 1) the name of the Lord Jesus is a metonym that represents his authority. Alternate translation: "with the authority of our Lord Jesus" or 2) being assembled in the Lord's name implies meeting together to worship him. Alternate translation: "to worship our Lord Jesus" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-explicit]])