Sentence:  The fact remains, however, that Honorius's glorification of the Synagogue demonstrates how reformist apocalypticism — even as it <WSD>drew a line in the sand</WSD> between the elect and the forces of evil — opened the door to a future transformation that could change the very nature of the elect. 
Meaning of the word marked with <WSD> tags:  To create a real or artificial boundary or distinction between (two places, people or things).