solved.
But this code get the post via ID instead of tag.
<?php
$post_id = 52;
$queried_post = get_post($post_id);
$title = $queried_post->post_title;
echo "<div>$title;</div>";
echo "<div>$queried_post->post_content</div>";
echo get_the_post_thumbnail( $post_id, 'full' );
?>
