'Bought' in the Bible

and they sing a new song before the throne, and before the four living creatures and the elders. And no one could learn that song save the hundred and forty-four thousand who were bought from the earth.

These are they who have not been defiled with women, for they are virgins: these are they who follow the Lamb wheresoever it goes. These have been bought from men as first-fruits to God and to the Lamb: