For you yourselves know, brothers, our visit to you wasn't in vain,
Here it seems, from the connection 1 Thessalonians 2:3-5, to be used in the latter sense, as denoting that they were not deceivers. The object does not appear to be so much to show that their ministry was successful, as to meet a charge of their adversaries that they were impostors. Paul tells them that from their own observation they knew that this was not so.