Template Problem

Hi , i want make query from posts but this code create query from current Page as thumbnail .
what do you think about that ?

<?php
/*
Template Name: newscat
*/
get_header(); ?>

<div class="site-content-wrapper">
    <div id="content" class="blog-content">
        <div class="col-md-9">
        <?php while (have_posts()) : the_post(); ?>
                    <div class="item-post">
                        <a href="<?php the_permalink(); ?>">
                            <?php if(has_post_thumbnail() ) : the_post_thumbnail('large'); ?>
                            <?php else :  ?>
                            <img src="<?php echo get_template_directory_uri(); ?>/images/post_image.jpg" class="wp-post-image" />
                            <?php endif; ?>
                            <h2 class="post-title"><?php the_title(); ?></h2>
                        </a>

<!--                        <?php if( 'on' == of_get_option('sc_blog_featured', 'on')) : ?>
                        <div class="post-thumb col-sm-4">
                            <a href="<?php the_permalink(); ?>">
                                <?php the_post_thumbnail('large'); ?>
                            </a>
                        </div>
                        <?php endif; ?>

                        <div class="col-sm-8 <?php echo 'on' == of_get_option('sc_blog_featured', 'on') ? '' : 'featured_none'; ?>">
                            <h2 class="post-title">
                                <a href="<?php the_permalink(); ?>">
                                    <?php the_title(); ?>
                                </a>
                            </h2>
                            <div class="post-content">
                                <?php the_excerpt(); ?>
                            </div>
                            <div class="text-right">
                                <a class="button button-primary" href="<?php the_permalink(); ?>">Read More</a>
                            </div>
                        </div>-->
                    </div>
                <?php endwhile; ?>

        </div>

        <?php avenue_paging_nav(); ?>
    </div>
    <div class="clear"></div>
</div>

<?php get_footer(); ?>
<script>
jQuery(document).ready(function($){
    $('.site-content-wrapper .site-content').imagesLoaded(function () {
        $('.site-content-wrapper .site-content').masonry({
            itemSelector: '.item-post',
            gutter: 0,
            transitionDuration : 0,
        }).masonry('reloadItems').masonry();
    });
});  

</script>