As He had said above that those who have the robe of a good life are yet not to be received because of the impiety of their doctrines; so now on the other hand, He forbids us to participate the faith with those who while they are strong in sound doctrine, destroy it with evil works. For it behoves the servants of God that both their work should be approved by their teaching and their teaching by their works.
And therefore He says, “Not every one that saith unto me, Lord, Lord, enters into the kingdom of heaven.”
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).