en_tn_lite_do_not_use/jer/50/05.md

They will ask

The word "They" refers to the people of Israel or the people of Judah who are returning from Babylon to Jerusalem.

join ourselves to Yahweh

This is figurative language used to explain a spiritual connection to Yahweh. (See: rc://en/ta/man/jit/figs-idiom)

that will not be forgotten

This states that the covenant will be obeyed forever. It can be stated in active form. Alternate translation: "that no one will forget" (See: rc://en/ta/man/jit/figs-activepassive)