Merit and paradise for protestants

Henry, thank you very much for your answer. I find a contradiction in the
rejection that Luther makes of the concept of merit and the conservation of
paradise-heaven by protestantism. Paradise is the place were people with
enough merits go (at least that is the position of catholicism). If Luther
rejects merit, he should then reject paradise.
It is contradictory lo reject merit and to accept paradise. How can this be
explained?

Ana Spinoza