Acts 16:36

ἀπήγγειλεν δὲ … τοὺς λόγους τούτους, and he reported these words. No doubt he came with great joy, and it is evident that Paul and Silas had gone back to their prison after the events at midnight.

ἐξελθόντες πορεύεσθε, come forth and go, i.e. out of the prison, in which they were still remaining to abide what should befall.