Split and simplify the following sentence while retaining its full meaning: For example , the account says that Tobit witnessed both the revolt of the northern tribes and the deportation of Israelites to Nineveh , events in Israels history that were separated by 257 years .
 Simplified version:
For example , the account says that Tobit witnessed the revolt of the northern tribes and the deportation of the Israelites to Nineveh . However , 257 years separate these two events in the history of Israel .