'Once' in the Bible

“Proclaim further: This is what the Lord of Hosts says: My cities will again overflow with prosperity; the Lord will once more comfort Zion and again choose Jerusalem.”

The Lord will take possession of Judah as His portion in the Holy Land, and He will once again choose Jerusalem.

the residents of one city will go to another, saying: Let’s go at once to plead for the Lord’s favor and to seek the Lord of Hosts. I am also going.

I will whistle and gather thembecause I have redeemed them;they will be as numerous as they once were.