en_tn/rev/14/09.md

will drink the wine of God's wrath

Here "drink the wine" means to experience God's wrath. (See: rc://en/ta/man/translate/figs-metaphor)

that has been prepared

AT: "that God has prepared" (See: rc://en/ta/man/translate/figs-activepassive)

cup of his anger

The cup is filled with the wine that represents God's anger.

poured unmixed

This refers to wine that is not diluted with water. This means that they will experience God's full wrath.

his holy angels

"God's holy angels"