King James Version
And the keeper of the prison awaking out of his sleep, and seeing the prison doors open, he drew out his sword, and would have killed himself, supposing that the prisoners had been fled.English Standard Version
When the jailer woke and saw that the prison doors were open, he drew his sword and was about to kill himself, supposing that the prisoners had escaped.Catholic Public Domain Version
Then the prison guard, having been jarred awake, and seeing the doors of the prison open, drew his sword and intended to kill himself, supposing that the prisoners had fled