How to order content on single page

Hi I am using the following code on a page template, it pulls content from other pages that I create and displays the content on a single template to give a one-page theme.

<?php $pages = get_pages();
foreach ($pages as $page_data) {
    $content = apply_filters('the_content', $page_data->post_content);
    $title = $page_data->post_title;
	$slug = $page_data->post_name;
   	echo "<section class='$slug'>";
	echo "<div class='row'>";
	echo "<div class='small-12 large-12 columns' role='main'>";
	echo "<h2>$title</h2>";
	echo $content;
	echo "</div>";
	echo "</div>";
	echo "</section>";
}
?>

The content is displayed within sections on a single page, but I can’t re-order the content or display it in a certain order. Is there a method I can use to do this?