8 But land that produces thorns and thistles is worthless and is in danger of being cursed. In the end it will be burned.

Read Hebrews 6:8 Using Other Translations

But that which beareth thorns and briers is rejected, and is nigh unto cursing; whose end is to be burned.
But if it bears thorns and thistles, it is worthless and near to being cursed, and its end is to be burned.
But if a field bears thorns and thistles, it is useless. The farmer will soon condemn that field and burn it.