Include multiple page ids in loop

page is not an accepted parameter for WP_query , you can use page_id but that doesn’t accept an array , only one specific ID, so just use post__in like this:

<?php $args = array(
        'post__in' => array(139, 54)
  );

  $loopy = new WP_Query($args);
  while ($loopy->have_posts()) : $loopy->the_post(); ?>
        <div class="item"><?php the_title(); 
              echo '<br ?>';

        echo '</div>';      
  endwhile; 

you can read more about the accepted parameters of wp_query at the codex