Show the content insted of title in a list.

I’m using a bit of code in my theme to show child pages and grandchild pages of a page.
It works perfect except for the fact that I want to show the content from the grandchildren and not the title (as it does today). I’ve tried to change “the_title” to “the_content” but that didn’t work.

Any suggesitions?

<?php

    $portfolioID = $post->ID;

    $portfolio_sections = array(
      'post_type' => 'page',
      'child_of' => $portfolioID,
      'sort_column' => 'menu_order',
      'sort_order' => 'ASC',
    );

    $sections = get_pages($portfolio_sections);

    $hierachical = array();

    if ( ! empty($sections) ) {
      foreach ( $sections as $section ) {
        if ( $section->post_parent == $portfolioID ) {
          if ( ! isset( $hierachical[$section->ID]) ) $hierachical[$section->ID] = array();
          $hierachical[$section->ID]['child'] = $section;
          $hierachical[$section->ID]['grandchildes'] = array();
        } else {
          if ( ! isset( $hierachical[$section->post_parent]) ) $hierachical[$section->post_parent] = array();
          $hierachical[$section->post_parent]['grandchildes'][] = $section;
        }
      }
      foreach ( $hierachical as $id => $hierachical_data ) {
        if ( ! isset($hierachical_data['child']) || ! is_object($hierachical_data['child']) ) continue;
        echo '<div class="grid">';
        echo '<h2>' . get_the_title($hierachical_data['child']->ID) . '</h2>';
        echo '<ul>';
        if ( isset($hierachical_data['grandchildes']) && ! empty($hierachical_data['grandchildes']) ) {
          foreach ( $hierachical_data['grandchildes'] as $grandchild ) {
            if ( ($grandchild->ID)) {
              echo '<li>';
              echo get_the_title($grandchild->ID);
              echo '</li>';
            }
          }
        }
        echo '</ul>';
        echo '</div>';
      }
    } ?>