Acts 16:32 (KJV)

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.

But Paul cried with a loud voice, saying, Do thyself no harm: for we are all here.

Then he called for a light, and sprang in, and came trembling, and fell down before Paul and Silas,

And brought them out, and said, Sirs, what must I do to be saved?

And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house.

And he took them the same hour of the night, and washed their stripes; and was baptized, he and all his, straightway.

And when he had brought them into his house, he set meat before them, and rejoiced, believing in God with all his house.

And when it was day, the magistrates sent the serjeants, saying, Let those men go.

And the keeper of the prison told this saying to Paul, The magistrates have sent to let you go: now therefore depart, and go in peace.

But Paul said unto them, They have beaten us openly uncondemned, being Romans, and have cast us into prison; and now do they thrust us out privily? nay verily; but let them come themselves and fetch us out.