And they spake unto him the word of the Lord, and to all that were in his house.
And they spake unto him the word of the Lord - unfolding now, doubtless, more fully what "the Lord Jesus Christ" was, to whom they had pointed his faith, and what the 'salvation' was which this would bring him.
And to (or 'with,' according to another reading) all that were in his house - who from their own dwelling (under the same roof no doubt with the prison) had crowded round the apostles, aroused first by the earthquake. From their addressing the Gospel message "to all that were in the house," it is not necessary to infer that it contained no children, But merely that as it contained adults besides the jailor himself, so to all of these-as alone of course fit to be addressed-they preached the word.