'Tributary' in the Bible

If that city accepts your terms of peace and opens its gates to you, then all the people who are found in it shall become your forced labor and shall serve you.

besides the taxes from the traders and from the wares of the merchants, and [the tribute money] from all the kings of the Arabs (Bedouins) and the governors of the country.

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!