---
...
testimonials:
  - { name: ..., role: ..., text: ..., url: ... }
  - { name: ..., role: ..., text: ..., url: ... }
  - { name: ..., role: ..., text: ..., url: ... }
---

{% for testimonial in page.testimonials %}
  <h2>{{ testimonial.name }} - {{ testimonial.role }}</h2>
  <p>{{ testimonial.text }}</p>
{% endfor %}