en_tn/hos/10/01.md

Hosea is speaking about Israel.

Israel is a luxuriant vine that produces his fruit

Israel is compared to a vine that is very fruitful. (See how you translated this in Hosea 9:13.). (See: rc://en/ta/man/translate/figs-metaphor)

a luxuriant vine

This vine is producing more fruit than normal.

As his land produced more, he improved his sacred pillars

AT: "With that money they made more stone columns in honor of their idols" (UDB)

Their heart is deceitful

This means that Israel is being dishonest toward Yahweh by their worship of idols. (See: rc://en/ta/man/translate/figs-metonymy)

now they must bear their guilt

AT: "but the time has come that they must pay for their sins." (UDB)