Save your lives

The word "your" refers to the people of Moab.

become like a juniper bush in the wilderness

The people fleeing from their cities into the desert is compared to a bush or shrub that grows in the desert. Alternate translation: "become like a shrub that grows in the wilderness" (See: rc://en/ta/man/translate/figs-simile and rc://en/ta/man/translate/translate-unknown)