Dynamically Populating Image/Excerpt/LInks from Pages in WordPress

You can load content from other pages via the get_pages function:

<?php
$args = array(
    'sort_column' => 'menu_order',
    'include' => array( 5, 6, 7 ) // your page IDs
);
$my_pages = get_pages( $args );

foreach( $my_pages as $page ){
    setup_postdata( $page );
    the_title();
    the_post_thumbnail();
    the_excerpt();
    the_permalink();
}
wp_reset_postdata();
?>