"Harry introduced you just enough to our ways to make you understand how they work," said Neville, patiently. "He was thrilled by how you'd adapted to it, even from your brief exposure to this type of magic. He was even forming a new idea ... to make you part of our final plan to get rid of Voldemort. He'd count on you to see it through now. He believed in you, he knew you had immense potential. You have to prove his faith was justified.