'Back' in the Bible

and I said to them: "We ourselves have bought back our brothers the Jews who were sold to the nations as we were able. But now you yourselves have sold your brothers so they may be sold to us!" They were silent and could not find a word [to say].

Then my God put into my heart to assemble the nobles, the prefects, and the people to be enrolled. I found the book of the genealogy of those who first came back, and I found [this] written upon it:

"But they rebelled and were rebellious against you and cast your law behind their back and killed your prophets, who had warned them to turn back to you, and they did great blasphemies.

And then I came to learn that the food of the Levites had not been given to them, so that the Levites and the singers, the doers of the work, had gone back each to his field.