'Strongholds' in the Bible

The Lord has swallowed up all the habitations of Jacob, and has not pitied: He has thrown down in his wrath the strongholds of the daughter of Judah; He has brought them down to the ground; he has profaned the kingdom and its princes.

The Lord is become as an enemy, he has swallowed up Israel; He has swallowed up all her palaces, he has destroyed his strongholds; He has multiplied in the daughter of Judah mourning and lamentation.