Beginning with a new mishnah that opens on the bottom of daf 19: One may not make jewelry for an object of idolatry -- but you can be hired to do such things, as an artist. Also, note that Jews may not sell that which is attached to the ground to non-Jews. The Gemara will investigate the source of this prohibition - lo techanem - don't do them any mercy - which demands a great deal of investigation, and several possible meanings. But the meaning of the text and the term itself don't quite line up nicely enough - which gives the Gemara more fodder to interpret. Also, a story in the context of this injunction: about Turnus Rufus and Rabbi Akiva, during the Hadrianic Persecutions. The story includes praising the beauty of a woman who worshipped idols, so isn't that an example of a violation of the prohibition - except that we also appreciate the beauty God brings into the world. But men aren't supposed to be gazing on women and contacting on them, regardless of whether they are beautiful.