<?php
$args = array(
'post_type' => 'post',
'posts_per_page' => 6,
'orderby' => 'date',
'order' => 'DESC',
);
$q = new WP_Query($args);
?>
<?php if ( $q->have_posts() ) : ?>
<?php while ( $q->have_posts() ) : $q->the_post(); ?>
//тут посты
<?php endwhile; ?>
<?php endif; ?>