lamine_wp/web/app/themes/la_mine/agenda.php

<?php

$timber_post     = new Timber\Post();
$context['posts'] = new Timber\PostQuery();

$context['post'] = $timber_post;

$context = Timber::context();

$args = array(
    'post_type' => 'post',
);

$context['posts'] = Timber::get_posts( $args );

Timber::render( array( 'agenda.twig' ), $context );