The first "stanza" in the Lecha Dodi hymn sung Friday night starts
שמור וזכור בדיבור אחד
I gather that this expression is a "condensed version" from Mechilta on Yitro (parsha 7)
זכור ושמור שניהם נאמרו בדיבור אהד
Why does Lecha Dodi have these in reverse order of the Midrash? I would also think that Lecha Dodi would follow the Torah's "chronological" order, i.e., Yitro appears first so Zachor should be mentioned first.