Rob Laughter

I just ran into the same issue. I poked around in the new API and came up with the following quick hack. You’ll need to get an API key from http://api.esv.org, then replace the mbbt_add_esv_text function with the code below.

//Returns ESV text
function mbbt_add_esv_text ($reference, $heading) {
		$esv_url = 'http://api.esv.org/v3/passage/html/?q='.urlencode($reference).'&include-headings=false&include-footnotes=false';
    if ($heading === FALSE || strtolower($heading) == 'span')
        $esv_url .= '&include-passage-references=false&include_audio_link=false&include-first-verse-numbers=false';

		$esv_args = array(
			'headers' => array (
				'Authorization' => 'Token XXXXXXXXXXXXXXXXXXX'
			)
		);

    $response = json_decode(wp_remote_retrieve_body(wp_remote_get($esv_url, $esv_args)));
		return $response->passages[0];
}