通过父母子页面循环 - wordpress

Is it possible to for loop through a specific parents children in Wordpress?

At the moment I have looked into:

$post->post_parent == '2'

but thats more of an if statement condition. Also I tried the following, but I need a specific parents children.

while(have_posts()) : the_post();

the following article helped me: https://wordpress.org/support/topic/displaying-wp_list_pages-and-custom-fields

You can use a custom query:

$the_query = new WP_Query(array(
    'post_parent' => 2
));

while ($the_query->have_posts())
{
    $the_query->the_post();
    echo get_the_title();
}

wp_reset_postdata();