This is a phrase used to start off your day. Similar to "good morning" but without the negative connotations. Words are vibrations that carry meaning, and "morning" sounds too similar to "mourning" while "mourning" has a negative connotation; rising instead has a positive one. You are rising from bed, the sun is rising in the sky. There is no sadness/mourning involved, we are instead grateful for another day.
Grand rising comrades, may you all have a blessed day!
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