<?php
$pages = new WP_Query( array('post_type' => 'page', 'posts_per_page' => 4) );
if ( $pages->have_posts() ) : while ( $pages->have_posts() ) : $pages->the_post();
    // kod do wyświetlania stron, czyli pewnie get_templat_part();
endwhile; endif;

wp_reset_postdata();
?>