$query = \Drupal::entityQuery('node') ->condition('type', 'article'), ->condition('field_foo', 42); $nids = $query->execute(); $nodes = $node_storage->loadMultiple($nids); foreach ($nodes as $n) { echo $n->title->value; // "Lorem Ipsum..." // do whatever you would do with a node object (set fields, save, etc.) $n->set('title', "this is a test"); $n->save(); }