John 15 verses 1-2 and 6 speak of branches being taken away and cast into the fire, is this a loss of salvation?

Believers are called to have a continuous living relationship with Jesus. In verses 4- 5 of John 15, Jesus tells the disciples how to have that relationship, He that abides in me, and I in him, the same bears much fruit: for apart from me ye can do nothing

John 15:1-2 and 6 explain what this relationship entails:

¹ I am the true vine, and my Father is the husbandman. ² Every branch in me that bears not fruit, he takes it away: and every branch that bears fruit, he cleanses it, that it may bear more fruit. . . . ⁶ If a man abide not in me, he is cast forth as a branch, and is withered; and they gather them, and cast them into the fire, and they are burned.

A vineyard in biblical times did not bear much resemblance to its mod­ern counterpart. The vines grew upon the ground instead of be­ing tied to some sort of support, yet as long as the vine lay on the soil, it could not bear fruit. Therefore, the winegrower placed a rock underneath the vine to lift it off the ground, enabling it to bear fruit. That is the point of this passage. The Greek word airó in John 15:2, translated here as takes it away, can also mean “to lift up.” If the intent was “take away,” it would refer to fruitless believers who are disciplined by death, as in I Corinthians 5:1-5, 11:28-30, and I John 5:16. However, another way to understand the term is “to lift up,” as is intended here. The Messiah lifts up every fruitless branch so that it can bear fruit.

The second step is: every <branch> that bears fruit, he cleanses it, that it may bear more fruit (Jn. 15:2b). Cleansing here means pruning. The Messiah prunes the branch so that it can bear even more fruit.

Some believers never seem to produce fruit, and then comes the third step: If a man abide not in me, he is cast forth as a branch, and is withered; and they gather them, and cast them into the fire, and they are burned (Jn. 15:6). This is not the fire of hell, but the fire of the judgment seat of Messiah; if the believer proves to be fruitless, then that which will burn is the fruitless branches they have produced—the wood, hay, and stubble of I Corinthians 3:10-15. The result is not the loss of salva­tion, but rather the loss of rewards.

In summary, the believer’s relationship with the Messiah entails those who abide in Him being lifted up by Him and bearing fruit. He will prune them by way of discipline so they can bear even more fruit. If they fail to produce fruit, then their barren branches will be judged by fire.

(Based on Dr Arnold G. Fruchtenbaum, “Yeshua: The Life of Messiah from a Messianic Jewish Perspective,” San Antonio, TX, Ariel Ministries, 2017; pp. 583-84; https://ariel.org.au/products/yeshua-the-abridged-version)