en_tn_condensed/jer/09/24.md

has insight and knows me

"understands who I am and knows me." Both of these phrases have similar meanings. They emphasize people knowing who Yahweh is and understanding who he is. (See: rc://en/ta/man/jit/figs-parallelism)

For I am Yahweh

This refers to people knowing Yahweh and his ways. Alternate translation: "Because people should understand that I am Yahweh" (See: rc://en/ta/man/jit/figs-explicit)

For it is in these that I take pleasure

The word "these" refers to covenant loyalty, justice, and righteousness.

this is Yahweh's declaration

Yahweh speaks of himself by name to express the certainty of what he is declaring. See how you translated this in Jeremiah 1:8. Alternate translation: "this is what Yahweh has declared" or "this is what I, Yahweh, have declared" (See: rc://en/ta/man/jit/figs-123person)