同学你好，该知识点来自沪江网校《流利口语金卡【随到随学】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学好，
这里的搭配是(have/show) faith in sth, sth代指的是句中的law, 因为and后面还有并列的结构，所以前一个law省略了。

great trust or confidence in something or someone
信任；信心
She has no faith in modern medicine.
她对现代医学没有信心。
You'll cope - I have great faith in you.
你能应付得了——我对你很有信心。
After the trial, his family said they had lost all faith in the judicial system.
审判之后，他的家人说，他们对司法体系已完全丧失信心。
Politicians must start keeping their promises if they want to restore the people's faith in government.
如果政治人物想恢复人们对政府的信任，他们必须开始信守承诺。

https://dictionary.cambridge.org/dictionary/english-chinese-simplified/faith

Have a good day!