Add blog page content before posts

output-blog-content.php

<?php
/*
----------------------------------------------------------------------------------
Ouput content for blog page (Settings > Static page > posts page) page above posts
----------------------------------------------------------------------------------
*/
function wphandcrafted_add_blog_page_content() {
	
    if ( is_home() ) {
    
        $post = get_page( get_option('page_for_posts'));
                
        echo wpautop($post->post_content);
    }
}

add_action  ('loop_start', 'wphandcrafted_add_blog_page_content');

?>