Pagination not working with offset

Hi, my index page is:

<?php get_header(); ?>
</style>
	<div id="primary" class="content-areas">
		<main id="main" class="site-main" role="main">
		<?php
			query_posts('offset=4');
		?>
		<?php if ( have_posts() ) : ?>
			<?php /* Start the Loop */ ?>
			<?php while ( have_posts() ) : the_post(); ?>

				<?php
					do_action('protopress_blog_layout');
				?>

			<?php endwhile; ?>

			<?php protopress_pagination(); ?>

		<?php else : ?>

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

		<?php endif; ?>

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

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

It showing the pages links, but when I click on the Page 2 button it still shows me the first page content.
why?