Sellers and buyers
'Sellers and buyers' signify people who make gain for themselves from holy things.
'To sell and to be sold,' as in Isaiah 51:1, 52:4, Ezekiel 30:12, signifies alienating truths, and being alienated from them as well as accepting falsities for truths, and being captivated by them.
(Odkazy: Apocalypse Explained 840)