<?php
$query = new WP_Query(array(
    'posts_per_page'   => 30,
));

while ($query->have_posts()): $query->the_post(); ?>
    <li>
        <a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
        <p><?php the_excerpt(); ?></p>
    </li>
<?php endwhile;