'Priestly' in the Bible

So you will stumble in the daytime,And the [false] prophet will also stumble with you in the night;And I will destroy your mother (Israel).

My people are destroyed for lack of knowledge [of My law, where I reveal My will].Because you [the priestly nation] have rejected knowledge,I will also reject you from being My priest.Since you have forgotten the law of your God,I will also forget your children.