Add links to previous and next posts on single posts

add_action( 'genesis_after_entry', 'custom_adjacent_entry_nav' );
/**
 * Displays links to previous and next entry.
 *
 * @since 2.3.0
 *
 * @return void Return early if not singular or post type doesn't support `genesis-adjacent-entry-nav`.
 */
function custom_adjacent_entry_nav() {

    if ( ! is_singular() ) {
        return;
    }

    genesis_markup( array(
        'open'    =&gt; '<div>',
        'context' =&gt; 'adjacent-entry-pagination',
    ) );

    echo '<div class="pagination-previous alignleft">';
    previous_post_link( '%link', '« Previous Post: %title' );
    echo '</div>';

    echo '<div class="pagination-next alignright">';
    next_post_link( '%link', 'Next Post: %title »' );
    echo '</div>';

    genesis_markup( array(
        'close'    =&gt; '</div>',
        'context' =&gt; 'adjacent-entry-pagination',
    ) );

}