Radiant sessies

// WP_Query arguments
$args = array(
	'post_type'              => array( 'sessie' ),
	'tax_query'              => array(
		'relation' => 'AND',
		array(
			'taxonomy'         => 'leerjaar',
			'terms'            => 'oud-curriculum',
			'field'            => 'slug',
			'operator'         => 'AND',
		),
	),
);

// The Query
$workshops = new WP_Query( $args );

// The Loop
if ( $workshops->have_posts() ) {
	while ( $workshops->have_posts() ) {
		$workshops->the_post();
		// do something
	}
} else {
	// no posts found
}

// Restore original Post Data
wp_reset_postdata();