But if the land produces [only] thorns and thistles, it is worthless and in danger of being cursed [by God], and will end up being burned.

So, he said to the orchard worker, "Look, I have been coming [here] looking for figs for three years now, but have not found any. Cut down the tree, [for] why should it waste the space [i.e., by not producing]?"

If a person does not remain united to me, he will be thrown out as a [fruitless] branch and dried up. People gather up such branches and throw them into the fire to be burned [as fuel ?].

and 12].

Every tree that does not produce wholesome fruit should be chopped down and thrown into the fire.

Then He [i.e., the King] will say to those at His left side, 'Go away from me, you who are cursed [by God], into the never ending fire which is prepared for the devil and his angels.

Therefore, He said to the tree, "From now on no one will ever eat fruit from you." Now His disciples heard Him say this.

Then Peter remembered [what Jesus had done to the fig tree on a recent occasion], and said to Him, "Rabbi [i.e., Teacher], look, the fig tree you cursed [the other day] has withered up."

Instead, [there will be] a fearful expectation of [coming] judgment and of [God's] raging fire which will consume His enemies.

For you recall how, even after he [later] wanted to inherit the blessing, Esau was rejected [by his father Isaac. See Gen. 37:35-40]. For he was not able to get his father to change his mind, even though he tearfully begged him [or, "he was not able to change the situation, even though he shed tears over his loss"].

And if any person's [name] was not found recorded in the book of life, he was thrown into the lake of fire.

Treasury of Scripture Knowledge

Summary

But that which beareth thorns and briers is rejected, and is nigh unto cursing; whose end is to be burned.

Bible References

Beareth

For you recall how, even after he [later] wanted to inherit the blessing, Esau was rejected [by his father Isaac. See Gen. 37:35-40]. For he was not able to get his father to change his mind, even though he tearfully begged him [or, "he was not able to change the situation, even though he shed tears over his loss"].
Therefore, He said to the tree, "From now on no one will ever eat fruit from you." Now His disciples heard Him say this.
So, he said to the orchard worker, "Look, I have been coming [here] looking for figs for three years now, but have not found any. Cut down the tree, [for] why should it waste the space [i.e., by not producing]?"

Whose

Instead, [there will be] a fearful expectation of [coming] judgment and of [God's] raging fire which will consume His enemies.
And even now the axe is ready to chop down the trees [i.e., you Jewish people]. Every tree [i.e., person] that does not produce wholesome fruit [i.e., godly, repentant lives] will be cut down and thrown into the fire [i.e., the final punishment of the wicked].
Every tree that does not produce wholesome fruit should be chopped down and thrown into the fire.
Then He [i.e., the King] will say to those at His left side, 'Go away from me, you who are cursed [by God], into the never ending fire which is prepared for the devil and his angels.
If a person does not remain united to me, he will be thrown out as a [fruitless] branch and dried up. People gather up such branches and throw them into the fire to be burned [as fuel ?].
And if any person's [name] was not found recorded in the book of life, he was thrown into the lake of fire.

General references

Truly I tell you, all of mankind's sins and the abusive language that they use in speaking against God [and men] can be forgiven.
And every person who speaks an [abusive] word against the Son of man will be forgiven of it, but the person who speaks abusive words against the Holy Spirit will not be forgiven of it.
saying, 'This man began to build [a tower] but was not able to finish it.'
For if people are doing these things [to me] while the [leaves of the] tree are green [i.e., to someone innocent of wrongdoing], what will they do when [the leaves] are dried up [i.e., to the sinful Jews of Jerusalem]?"
And you should show pity toward some people because they have doubts [regarding spiritual matters];
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