480 B
480 B
Suddenly
This introduces a new event. (See: rc://en/ta/man/translate/writing-newevent)
the chains of all the prisoners
The possessive of all the prisoners here refers chains that were holding the prisoners in place. They did not belong to the prisoners—they belonged to the Roman government. (See: rc://en/ta/man/translate/figs-possession)
fell off
This could mean suddenly came off or suddenly came apart so that the prisoners were released.