John 15:6
“He is cast forth...”
No longer enjoying the benefit of the husbandman's hand. “And is withered.” That is, if he had anything of the root, he loses it; if any grace, he is stripped of this, and is bereft of the help and life which proceed from it. And what the end? “He is cast into the fire.” Not such he who abides with Him. Then He shows what it is to “abide,” and says,
Source: Homilies on the Gospel of John (New Advent)