'Exchange' in the Bible
Fulfill the week for this daughter, then we'll give you the other one in exchange for serving me another seven years."
In response, Leah asked her, "Wasn't it enough that you've taken away my husband? Now you also want to take my son's mandrakes!" But Rachel replied, "Okay, let's let Jacob sleep with you tonight in exchange for your son's mandrakes."
So Joseph kept on accumulating all the money that was to be found throughout Egypt and Canaan in exchange for the grain that was being purchased. He stored the money in Pharaoh's palace.
"You can surrender your livestock," Joseph replied. "I'll feed them in exchange, since your money is gone."
So they brought their livestock to Joseph, and Joseph traded food in exchange for horses, various flocks and herds, and donkeys. He fed them with food in exchange for their livestock during that year.
So why should we and our land die right in front of you? Buy us and our land in exchange for food, and we and our land will be slaves to Pharaoh. Give us seed, so we can survive and not die, and so the land won't stay desolate."
After this, Joseph addressed the people. "Pay attention," he said. "I've bought you and your land for Pharaoh today, in exchange for seed for you. Now go sow the land.