Adam Clarke on Jeremiah 14:21

Do not disgrace the throne of thy glory - The temple. Let not this sacred place be profaned by impious and sacrilegious hands.

Break not thy covenant - See Exo 24:7, Exo 24:8; Exo 19:5. They had already broken the covenant, and they wish God to fulfill his part. They ceased to be his people, for they abandoned themselves to idolatry; and yet they wished Jehovah to be their Lord; to defend, support, and fill them with all good things! But when the conditions of a covenant are broken by one of the contracting parties, the other party is not bound; and the covenant is necessarily annulled.