Question:
What does “and thy house” mean in Acts 16:31?

Answer:
They were saying that the same faith that saved the jailor, could save everyone in his house. The jailer’s family was baptized because he wanted to bring his household unto the same ground that he was on himself. But this doesn’t mean that it is a guarantee that his children would be saved.

Some people think that being children of Christian parents is the reason why they were saved, but that’s not always true. Each person is responsible individually before the Lord, no matter what our environment is like. The Lord can save anyone in either a good or bad environment.