Jeremiah 9:24 - Matthew Poole's English Annotations on the Holy Bible

Understandeth and knoweth me: whether we make any curious distinction between understanding God, as if that be more speculative, whereby we rightly apprehend his nature; and knowing God, as if that be more practical, as directing the conversation; we need not here inquire; yet certainly both centre in this, that we so know and understand God as to trust in him and depend on him alone in all conditions. Which exercise loving-kindness, judgment, and righteousness in the earth; kindness, as it relates to his own people, Psalms 5:12; judgment, with reference to his punishing the wicked; righteousness, namely, as he deals justly and uprightly with both, Psalms 92:15. The meaning here, I conceive is to show God's orderly governing and disposing of things in the world in his distributive justice, that all things are right and equal. In these things I delight; both in himself and others, Psalms 11:7.