英语翻译But brave them you must,if you are to recover a sage who

英语翻译
But brave them you must,if you are to recover a sage who is pure of heart.Gather your courage.
求翻译和语法解释
我知道should前置是IF SHOULD虚拟的倒装说法
那这里的奇怪语顺又作何解释,是做BUT YOU MUST BRAVE THEM的解释吗