Verses with the word servitude in the Old Testament (2 verses):

2 Chronicles 10:4
Thy father made our yoke grievous: now therefore ease thou somewhat the grievous servitude of thy father, and his heavy yoke that he put upon us, and we will serve thee.

Lamentations 1:3
Judah is gone into captivity because of affliction, and because of great servitude: she dwelleth among the heathen, she findeth no rest: all her persecutors overtook her between the straits.