17 The LORD has done what he planned; he has fulfilled his word, which he decreed long ago. He has overthrown you without pity, he has let the enemy gloat over you, he has exalted the horna of your foes.

Read Lamentations 2:17 Using Other Translations

The LORD hath done that which he had devised; he hath fulfilled his word that he had commanded in the days of old: he hath thrown down, and hath not pitied: and he hath caused thine enemy to rejoice over thee, he hath set up the horn of thine adversaries.
The LORD has done what he purposed; he has carried out his word, which he commanded long ago; he has thrown down without pity; he has made the enemy rejoice over you and exalted the might of your foes.
But it is the LORD who did just as he planned. He has fulfilled the promises of disaster he made long ago. He has destroyed Jerusalem without mercy. He has caused her enemies to gloat over her and has given them power over her.