On this lengthy response follow me patiently if possible.
Is this also talking about wicked or evil servants or "Defeated Christians" as you call them?
“Beware of false prophets, who come to you in sheep’s clothing, but inwardly they are ravenous wolves.
Here I would be careful. A false prophet of could be a non-believer.
Yet a false prophet could also be one is a Christian.
So I would stop short of saying verse 15 cannot be an unbeliever.
But it could be a defeated Christian for sure.
How will we know a false prophet whether defeated Christian or non-Christian ? The principle is the same regardless
"By their FRUITS you will recognize them."
It is not the talk that is important here. It is the fruit of their doings by which we determine if they are a false prophet.
Now I will concentrate on the defeated Christian who becomes a false prophet. Verse 13 is an exhortation to the disciples -
[b]"Enter in through the narrow gate, for wide is the gate and broad is the way that leads to destruction, and many are those who enter through it. Because narrow is the gate and constricted is the way that leads to life, and few are those who find it. Beware of false prophets ...."
DESTRUCTION -
"broad is the way that leads to destruction"
"Destruction" here most mean the destruction of the person's works rather than destruction of the person himself. It is safe to interpret it this way. Why ?
In First Corinthians we have a Christian who will have his works and deeds undergo destruction:
First Corinthians 3:15 -
"If anyone's work is consumed, he will suffer loss, but he himself will be saved, yet so as through fire."
This is saved person. Yet he has many poor works and deeds accumulated since he began to live for Christ. At the judgment seat of Christ his life is examined. And the hypocrisy, fleshly living, worthless works pass through an examination. What is of God - gold, silver, precious stones survives the fire. What is worthless, of the old nature, useless for Christ's building is burned up - destroyed. Yet the believer is saved as escaping from a burning down house, as through fire-
" ... but he himself will be saved, yet so as through fire."
Matthew 7:14 I think should be understood by the saved disciple in this way. If he goes on the broad way of being all his Christian life indistinguishable from a worldly person or becomes a false prophet, his works will be destroyed. He can lose the reward of the kingdom -
"If anyone's work which he has built upon the foundation remains, he will receive a reward." (1 Cor. 3:14)
He is already eternally redeemed and has eternal life. In addition he will receive a reward to be enjoyed in the millennium. But he could also
"suffer loss" the reward -
"If anyone's work is consumed, he will suffer loss, but he himself will be saved, yet so as through fire." (v.15)
This is the result of poor fruits.
This is the result of inferior building materials for God's living temple.
This is the exposed inferiority of
"wood, grass, stubble" to build on the foundation of Christ in verse 12.
This is the exposure of the shortage of
"gold, silver, precious stones" as superior building materials of verse 12.
The fire will not burn up the
"gold, silver, precious stones" of the superior works built on the foundation of Christ.
The fire WILL consume the
"wood, grass, stubble" of the inferior materials.
The broad way that leads to destruction in
Matthew 7:14 corresponds to the inferior materials which are found in great abundance -
"wood, grass, stubble". The narrow way which leads to life corresponds to
"gold, silver, precious stones" which are more rare and more precious and which are suitable for building a house which is to be torched with fire to expose what is lasting and what is not.
So
Matthew 7:14 certainly must apply to the saved Christian. And being saved yet so as through fire could correspond to having works burnt up so as to lose the kingdom reward.
Today some believers even can see fruits which are not going to be able to pass Christ's examination -
"By their fruits you will know them."
Even today we may recognize the fruits of poor quality in a believer and in ourselves. How much more the Lord will be able to expose them at His examination.
Even today we may see some Christians building on the foundation of Christ with
"wood, grass, stubble". How much more the Lord will expose the inferior materials for His building.
So the false prophet who are exposed by their fruits certainly can be the Christian on the broad way that leads to destruction of poor fruits and inferior works.
I say that this is safe because it does not exclude the false Christian. We know that the false Christian can be a false prophet. So my analysis does no harm to regarding it a warning about false Christians. However it includes warning against true Christian on the broad way and prophesying falsely. That could apply to us.
Now we come down to this:
"Not everyone who says to Me, Lord, Lord will enter into the kingdom of the heavens, but he who does the will of My Father who is in the heavens.
Many will say to Me in that day, Lord, Lord, was it not in Your name that we prophesied, and in Your name cast out demons, and in Your name did many works of power ?
And then I will declare to them: I never knew you. Depart from Me, you workers of lawlessness." (vs. 21-23)
The question here is could this passage possibly refer to a saved Christian? Did I not say many times from Romans 10 that if we confess Jesus as Lord and believe in the heart that God raised Him from the dead we will be saved?
My reply would be emphatically yes, this one can who will say on that day "Lord, Lord didn't we do this or that in your name" can lose the reward of entering into the millennial kingdom THOUGH he is eternally saved.
Cont. below.