Here is the line of code I use to display the content of one particular post somewhere on my WordPress website:
<?php
$post_id = 26;
$queried_post = get_post($post_id);
$content = $queried_post->post_content;
$content = apply_filters('the_content', $content);
$content = str_replace(']]>', ']]>', $content);
echo $content;
?>
You will obviously need to replace the post ID (26) in the code above with the post ID of the post you want to call.