“Unless one remains in Me, he is cast out as the branch and is dried up; and they gather and throw them into a fire, and they are burned” (John 15:6).
Jesus speaks of those who do not remain in Him and are thus, “cast out.” Here are some Scriptural examples of those who did not remain in Him and were thus cast out:
“For Demas deserted me, loving the present age, and he went to Thessalonica” (2 Timothy 4:10).
Demas deserted Paul along with Paul’s doctrine because he loved this world. It was Demas’ love for the world that caused him to forsake the Christ that Paul preached.
“They went out from us, but they were not of us. For if they were of us, they would have remained with us; but they left so that it might be revealed that they all are not of us” (1 John 2:19).
If they were of us, if they had remained in Christ (John 15:6), then they would have remained with us since we remain with Christ. But they went out (i.e., they left) so that it might be revealed that they were not truly of us. Those in 1 John 2:19 who went out, are the branch that is dried up, and that will be thrown into a fire and burned (John 15:6).
“I am the True Vine, and My Father is the Vinedresser. Every branch in Me not bearing fruit, He takes it away; and each one bearing fruit, He prunes, so that it may bear more fruit.You are already pruned because of the Word which I have spoken to you. Remain in Me, and I in you. As the branch is not able to bear fruit of itself, unless it remain in the vine, so neither can you unless you remain in Me. I am the Vine; you are the branches. The one abiding in Me, and I in him, this one bears much fruit, because apart from Me you are not able to execute, nothing. Unless one remains in Me, he is cast out as the branch and is dried up; and they gather and throw them into a fire, and they are burned” (John 15:1-6).
The horticultural analogy is a vine. And with a vine, there are branches which appear to be connected, but which in reality are nothing but “dead wood.” These will be shown to not be bearing good fruit, but bad fruit. In this analogy it is implied that this bearing of fruit is good fruit, and so to NOT bear fruit is to NOT bear good fruit.
Those branches which are taken away are NOT those which are truly in the vine since it is impossible that those vines in Christ would not bear fruit. The one abiding in Him bears much fruit for apart from Him there would be no fruit bearing. Thus it follows that if there was never any fruit bearing, then the dried up dead branch was never in the Vine to begin with. The branch cannot bear fruit of itself because it does not have life and nourishment of itself.
Those who would twist John 15:1-6 to their own destruction asserting that the dried up dead branch was truly in the Vine must ALSO say that it is possible for a person to go from being spiritually dead to spiritually alive, back to spiritually dead again. In short, it is to say that a branch in the True Vine can unresurrect itself.