Berean Study Bible
Suddenly a strong earthquake shook the foundations of the prison. At once all the doors flew open and everyone’s chains came loose.

King James Bible
And suddenly there was a great earthquake, so that the foundations of the prison were shaken: and immediately all the doors were opened, and every one's bands were loosed.

American Standard Version
and suddenly there was a great earthquake, so that the foundations of the prison-house were shaken: and immediately all the doors were opened, and every one's bands were loosed.

Darby Bible Translation
And suddenly there was a great earthquake, so that the foundations of the prison shook, and all the doors were immediately opened, and the bonds of all loosed.

Douay-Rheims Bible
And suddenly there was a great earthquake, so that the foundations of the prison were shaken. And immediately all the doors were opened, and the bands of all were loosed.

English Revised Version
and suddenly there was a great earthquake, so that the foundations of the prison-house were shaken: and immediately all the doors were opened; and every one's bands were loosed.

Young's Literal Translation
and suddenly a great earthquake came, so that the foundations of the prison were shaken, opened also presently were all the doors, and of all -- the bands were loosed;