Wordpress custom query

<?php
$args_fp = array(
    'post_type' => 'page',
    'post__in' => array(10,11,12,13),
    'orderby' => 'post__in',
);
$fp_query = null;
$fp_query = new WP_Query($args_fp);
while ($fp_query->have_posts()) : $fp_query->the_post(); ?>
<li><a href="<?php the_permalink() ?>"><?php the_title(); ?><?php the_content(); ?></a></li>
<?php endwhile; ?>
?>