Verses with the word ruinous in the Old Testament (3 verses):

2 Kings 19:25
Hast thou not heard long ago how I have done it, and of ancient times that I have formed it? now have I brought it to pass, that thou shouldest be to lay waste fenced cities into ruinous heaps.

Isaiah 17:1
The burden of Damascus. Behold, Damascus is taken away from being a city, and it shall be a ruinous heap.

Isaiah 37:26
Hast thou not heard long ago, how I have done it; and of ancient times, that I have formed it? now have I brought it to pass, that thou shouldest be to lay waste defenced cities into ruinous heaps.