What happens after the church age ends?
After the church age ends, the undetermined period closes and the seven years of tribulation begin. At that point, prophecy resumes and a specific time frame is reestablished, with seven years elapsing in prophecy. The church age itself has no prophetic utterance or date-setting for Christ's return.
Les teaches that the church age has no prophetic utterance connected with it, so no one can set a date for the return of Christ for the church. But as soon as the church age is done and that undetermined period of time is ended, the seven years of the tribulation begin. Then prophecy resumes and a specific time frame is back in view. Seven years are going to elapse in prophecy. This contrasts with the church age, for which there is nothing like that.