Simplify while loop containing posts code in wordpress - wordpress

Question

The code below should display the content of the page followed by certain page content.
<!-- Section -->
<section>
<?php if (have_posts()): while (have_posts()) : the_post(); ?>
<!-- Article -->
<article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
<!-- Posts for homepage -->
<?php
if ( is_front_page() ) { ?>
<?php the_content(); ?>
<!-- Show page content according to page ID -->
<div class="title-home clearfix">
<div class="four title-home-text">Services Spotlight</div>
<div class="four title-home-text" style="margin-left: 115px;">Industry Expertise</div>
<div class="four title-home-text" style="margin-left: 125px;">Features & Benefits</div>
</div>
<div class="four-wrapper clearfix">
<div class="four-container">
<div class="four-col line">
<?php
query_posts('page_id=40');
while (have_posts()): the_post();
the_content();
endwhile;
?>
</div>
read more
</div>
<div class="four-container">
<div class="four-col line">
<?php
query_posts('page_id=41');
while (have_posts()): the_post();
the_content();
endwhile;
?>
</div>
read more
</div>
<div class="four-container">
<div class="four-col line">
<?php
query_posts('page_id=42');
while (have_posts()): the_post();
the_content();
endwhile;
?>
</div>
read more
</div>
<div class="four-container">
<div class="four-col line">
<?php if(!function_exists('dynamic_sidebar') || !dynamic_sidebar('widget-area-3')) ?>
</div>
</div>
</div>
<?php
}
else {
?>
<h1><?php the_title(); ?> </h1>
<?php the_content(); ?>
<?php } ?>
<!-- end post homepage -->
<br class="clear">
<?php edit_post_link(); ?>
</article>
<!-- /Article -->
<?php endwhile; ?>
<?php else: ?>
<!-- Article -->
<article>
<h2><?php _e( 'Sorry, nothing to display.', 'html5blank' ); ?></h2>
</article>
<!-- /Article -->
<?php endif; ?>
</section>
<!-- /Section -->
<?php get_footer(); ?>
However, it displays the last query as loop.
Output Code:
<article id="post-6" class="post-6 page type-page status-publish hentry">
<article id="post-42" class="post-42 page type-page status-publish hentry">
post-42 should not be displayed in the article.
Also, I know the code is not simplified for using while loop. I want to fix the article problem and simplify this code.

Answer 1

The codex advises against using query_posts for secondary loops as per Codex Query Posts Page
It looks like you are stomping on the main loop (article) since query_posts alters the main loop. If you want to use query_posts it is recommended that you call wp_reset_query() when done. The preferred method is to use WP_query().