en_tn/hos/02/21.md

God is speaking to Hosea about what he will do for Israel.

And on that day

This phrase is used to refer to the future day of judgment and restoration.

The earth will answer the grain, the new wine and the oil, and they will answer Jezreel

This means that Yahweh will respond to the needs of Israel, referred to as Jezreel here, through the provision of grain, wine, and olive oil. (See: rc://en/ta/man/translate/figs-personification)