The Book of Ezra is about how the people of Israel returned from Babylon and tried to worship Yahweh again as the law required. To do this they needed to establish their nation again and affirm their covenant with Yahweh. They also needed to rebuild their temple so they could sacrifice to Yahweh.(See: [[rc://en/tw/dict/bible/kt/temple]])
The Book of Ezra is named for the priest Ezra who led the first group of Jews out of exile and back to Judah. Translators might choose to make the title clearer, for example, "The book about Ezra."
Foreigners worshiped many false gods. Yahweh did not allow his people to marry foreigners because he knew this would cause the people of Israel to worship other gods. (See: [[rc://en/tw/dict/bible/kt/falsegod]])
Many of the Jews remained in Babylon instead of returning to the Promised Land. Many of them had become successful in Babylon and desired to remain there. However, this meant that they were unable to participate in the temple worship as their ancestors had done. The remnant who returned to Israel were very faithful because they returned. (See: [[rc://en/tw/dict/bible/kt/promisedland]], [[rc://en/tw/dict/bible/kt/remnant]] and [[rc://en/tw/dict/bible/kt/faithful]])
The Book of Ezra uses the term "Israel" to refer to the kingdom of Judah, which was composed mostly of the two tribes of Judah and Benjamin. The other ten tribes had ended their loyalty to any kings descended from David. God allowed the Assyrians to conquer the other ten tribes and take them into exile. As a result, they became a part of other ethnic groups and did not return to the land of Israel. (See: [[rc://en/tw/dict/bible/kt/israel]])
Some of the events in the Book of Ezra are not told in the order they actually happened. Translators should pay attention to notes that signal when events are probably out of order with each other.