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

Isaiah 47:5
Sit thou silent, and get thee into darkness, O daughter of the Chaldeans: for thou shalt no more be called, The lady of kingdoms.

Isaiah 47:7
And thou saidst, I shall be a lady for ever: so that thou didst not lay these things to thy heart, neither didst remember the latter end of it.