This passage clearly says that there is a requirement that we continue to abide in Christ, to keep His commandments. If someone does not abide in Him "he is cast forth as a branch" and burned. Burning is equivalent to being cast into Hell fire...
John 15:1 I am the true vine, and my Father is the husbandman.
2 Every branch in me that beareth not fruit he taketh away: and every branch that beareth fruit, he purgeth it, that it may bring forth more fruit.
3 Now ye are clean through the word which I have spoken unto you.
4 Abide in me, and I in you. As the branch cannot bear fruit of itself, except it abide in the vine; no more can ye, except ye abide in me.
5 I am the vine, ye are the branches: He that abideth in me, and I in him, the same bringeth forth much fruit: for without me ye can do nothing.
6 If a man abide not in me, he is cast forth as a branch, and is withered; and men gather them, and cast them into the fire, and they are burned.
I disagree with your use of the word "requirement", abiding in Christ is not a requirement but a characteristic of the children of God. who will bear the fruit of the Spirit.
They abide in Him always. You either abide in Him or you don't, period.
Many in "Christendom" make assumptions as to their condition but as in the following passage:
Matthew 7:23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
He never knew them, not for one moment, they were never His to begin with.
But to those who are His...
John 10
27 My sheep hear my voice, and I know them, and they follow me:
28 And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand.
29 My Father, which gave them me, is greater than all; and no man is able to pluck them out of my Father's hand.
30 I and
my Father are one.
Knowing
about Christ, going to church, doing good things, even being a pastor, deacon sunday school teacher or being baptised in water never saved anyone.
Salvation is
ALL of Him and none of us, even our good works which follow regeneration have been fore-ordained ("For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them").
Matthew 11
27 All things are delivered unto me of my Father: and no man knoweth the Son, but the Father; neither knoweth any man the Father, save the Son, and he to whomsoever the Son will reveal him.
28 Come unto me, all ye that labour and are heavy laden, and I will give you rest.
29 Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls.
30 For my yoke is easy, and my burden is light.
And I give (present tense) unto them eternal life; and they shall never perish.
He meant what He said.
HankD