The reason those are cast into hell is that they are not "Sons".,
Please read the words of Jesus Christ:
41 “Then He will also say to those on the left hand, ‘Depart from Me, you cursed, into the everlasting fire prepared for the devil and his angels:42 for I was hungry and you gave Me no food; I was thirsty and you gave Me no drink; Matthew 25:41-42
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He was speaking to His servants. That's the plain context.
45 “Who then is
a faithful and wise servant, whom his master made ruler over his household, to give them food in due season? 46 Blessed
is that servant whom his master, when he comes, will find so doing.47 Assuredly, I say to you that he will make him ruler over all his goods.
Jesus teaches us about a servant who was promoted to be ruler over His household.
But the ruler became unfaithful, not watching for the return of the Lord, and end up being assigned his portion with the hypocrites where their is weeping and gnashing of teeth.
48 But if that evil servant says in his heart, ‘My master is delaying his coming,’49 and begins to beat
his fellow servants, and to eat and drink with the drunkards, 50 the master of that servant will come on a day when he is not looking for
him and at an hour that he is not aware of,51 and will cut him in two and appoint
him his portion with the hypocrites.
There shall be weeping and gnashing of teeth.
Matthew 24:45-51
Those servants of the Lord who are are faithful will inherit the kingdom of God.
Those servants of the Lord, who become unfaithful and live as those who are unrighteous of this world, and take advantage of others, the Lord will upon him unaware and...
cut him in two and appoint him his portion with the hypocrites. There shall be weeping and gnashing of teeth.
Let a man so consider us, as servants of Christ and stewards of the mysteries of God. Moreover it is required in stewards that one be found faithful. 1 Corinthians 4:1-2
9 Do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived. Neither fornicators, nor idolaters, nor adulterers, nor homosexuals, nor sodomites, 10 nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners will inherit the kingdom of God. 1 Corinthians 6:9-10
JLB