Query from Post dosent work !

I created Template which show last posts in current page .
This is a code but dosent make query from posts and just show current Page as Thumbnail !
The same code for Homepage work fine but for Template-page dosent work correctly .
I use the Theme “Babylos” -Smartcat – on WordPress 4.3

<?php if (have_posts()) : ?>
                <?php /* Start the Loop */ ?>
                <?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>