General Information:

In verses 3:11-13, Yahweh encourages the remnant of Israel who survive the judgment.

they will find refuge in the name of Yahweh

Yahweh's protection of this remnant is spoke of as if he was a refuge or a fortress. Here "name of Yahweh" refers to his person. Alternate translation: "they will come to Yahweh and he will help them" (See: rc://en/ta/man/translate/figs-metaphor and rc://en/ta/man/translate/figs-metonymy)