'Selling' in the Bible

Jacob said, “Swear [an oath] to me today [that you are selling it to me for this food]”; so he swore [an oath] to him, and sold him his birthright.

Meanwhile, Joseph continued to be ruler over the land, in charge of selling to everyone in the land. Joseph's brothers appeared and bowed down to him, face down.

And now don’t be worried or angry with yourselves for selling me here, because God sent me ahead of you to preserve life.