'Once' in the Bible

How solitary and lonely sits the city [Jerusalem]That was [once] full of people!How like a widow she has become.She who was great among the nations!The princess among the provinces,Has become a forced laborer!

The [noble and] precious sons of Zion,[Once] worth their weight in fine gold,How they are regarded [merely] as earthen jars,The work of a potter’s hands!