So, the day of vengeance is probably not the intended meaning here. Is there anything that directly connects this phrase & its phraseology with the 7th day, the 1st day, or even another day? Also, I am struggling to grasp how "Lord" could describe "day" without a possessive. In what other way could "Lord" describe "day"? Or can it still be a possessive adjective without being in the genitive case (something like the "Ronald McDonald House" in English)? —
Sarah 20 hours ago