The poets often devoted all their ambition to finding apt quotations from the sacred text.

But in one respect they failed to imitate the Bible, and this failure seriously cramped their genius.

The poetry of the Bible depends for its beauty partly on its form.

This form is what is called _parallelism of line_.

The fine musical effect produced by repeating as an echo the idea already expressed is lost in the poetry of the Spanish Jews.
Thus Spanish-Jewish poetry suffers, on the one side, because it is an imitation of the Bible, and therefore lacks originality, and on the other side it suffers, because it does not sufficiently imitate the Biblical style.