# In that day

"At that time"

# this song will be sung in the land of Judah

This can be stated in active form. Alternate translation: "the people in the land of Judah will sing this song" (See: [[rc://en/ta/man/translate/figs-activepassive]])

# We have a strong city

This refers to the city of Jerusalem.

# God has made salvation its walls and ramparts

God's power to protect and save his people is spoken of as if his salvation were walls around a city. (See: [[rc://en/ta/man/translate/figs-metaphor]])