en_tn/deu/29/04.md

Yahweh has not given you a heart to know, eyes to see, or ears to hear

The people do have hearts, eyes, and ears. This metonym says that Yahweh has not enabled them to understand from what they saw and heard who Yahweh is, and how and why they should obey him. (See: rc://en/ta/man/translate/figs-metonymy)

given you a heart to know

This is an idiom. Alternate translation: "enabled you to understand" (See: rc://en/ta/man/translate/figs-idiom)