"Sing about the vineyard of wine." This speaks about the people of Israel as if they were a vineyard that produced fruit. AT: "Sing about the people of Israel as if they were a vineyard that produced grapes for wine" (See: [[rc://en/ta/man/translate/figs-metaphor]])
The words "night" and "day" are combined here to mean "all the time." AT: "all the time" or "continually" (See: [[rc://en/ta/man/translate/figs-merism]])