I would suggest that you re-read Matt 25:31-46. You will see in these verses that both the sheep and the goats thought that they would be saved, but the sin of presumption was upon the goats and they were rejected, simply because they did no works.
Sugiero volver a leer Mateo 25:31-46. Ambos, las ovejas y los machos cabríos pensaban que se salvarían, pero, el pecado de presunción cayó sobre los machos cabríos y fueron rechazados, simplemente porque no se esforzaron en sus obras.