Limitar publicaciones en la página de inicio de WordPress

<?php
/**
 * The main template file.
 *
 * This is the most generic template file in a WordPress theme
 * and one of the two required files for a theme (the other being style.css).
 * It is used to display a page when nothing more specific matches a query.
 * E.g., it puts together the home page when no home.php file exists.
 * Learn more: http://codex.wordpress.org/Template_Hierarchy
 *
 * @package sparkling
 */

get_header(); ?>

	<div id="primary" class="content-area">
		<main id="main" class="site-main" role="main">

		<?php if ( have_posts() ) : ?>

			<?php /* Start the Loop */ ?>
			<?php while ( have_posts() ) : the_post(); ?>

				<?php
					/* Include the Post-Format-specific template for the content.
					 * If you want to override this in a child theme, then include a file
					 * called content-___.php (where ___ is the Post Format name) and that will be used instead.
					 */
					get_template_part( 'content', get_post_format() );
				?>

			<?php endwhile; ?>

			<?php sparkling_paging_nav(); ?>

		<?php else : ?>

			<?php get_template_part( 'content', 'none' ); ?>

		<?php endif; ?>

		</main><!-- #main -->
	</div><!-- #primary -->

<?php get_sidebar(); ?>
<?php get_footer(); ?>

<?php if ( have_posts() ) while ( have_posts() ) : the_post(); ?> 

   <?php the_content(); ?>

<?php endwhile; ?>

<?php the_content(); ?>

<?php echo wp_trim_words( get_the_content(), 40, '...' ); ?>

<?php $recent = new WP_Query("showposts=1"); ?>
<?php if ($recent->have_posts()) : while($recent->have_posts()) : $recent->the_post();?>

<?php the_content(); ?>

<?php endwhile; ?>
<?php endif; ?>

<?php 
/** 
 * The main template file. 
 * 
 * This is the most generic template file in a WordPress theme 
 * and one of the two required files for a theme (the other being style.css). 
 * It is used to display a page when nothing more specific matches a query. 
 * E.g., it puts together the home page when no home.php file exists. 
 * Learn more: http://codex.wordpress.org/Template_Hierarchy 
 * 
 * @package sparkling 
 */ 

get_header(); ?> 

    <div id="primary" class="content-area"> 
        <main id="main" class="site-main" role="main"> 

<?php /* Start the Loop */ ?> 

<?php $recent = new WP_Query("showposts=1"); ?> 
<?php if ($recent->have_posts()) : while($recent->have_posts()) : $recent->the_post();?> 

                <?php 
                    /* Include the Post-Format-specific template for the content. 
                     * If you want to override this in a child theme, then include a file 
                     * called content-___.php (where ___ is the Post Format name) and that will be used instead. 
                     */ 
                    get_template_part( 'content', get_post_format() ); 
                ?> 

            <?php endwhile; ?> 

            <?php sparkling_paging_nav(); ?> 

        <?php else : ?> 

            <?php get_template_part( 'content', 'none' ); ?> 

        <?php endif; ?> 


        </main><!-- #main --> 
    </div><!-- #primary --> 

<?php get_sidebar(); ?> 
<?php get_footer(); ?>