'Bought' in the Bible

I said to them, "To the extent possible we have bought back our fellow Jews who had been sold to the Gentiles. But now you yourselves want to sell your own countrymen, so that we can then buy them back!" They were utterly silent, and could find nothing to say.

Yea, also I continued in the work of this wall, neither bought we any land: and all my servants were gathered thither unto the work.