Charles Ellicott Commentary Lamentations 2:7

"The Lord hath cast off his altar, he hath abhorred his sanctuary; He hath given up into the hand of the enemy the walls of her palaces: They have made a noise in the house of Jehovah, as in the day of a solemn assembly." — Lamentations 2:7 (ASV)

Has cast off ... has abhorred. —The two verbs are used in a similar context in Psalm 89:38.

His sanctuary. —The word points to the Holy of Holies, and “the walls of her palaces” are therefore those of the Temple rather than of the city.

They have made a noise. —The shouts of the enemies in their triumph, perhaps even the shouts of their worship, had taken the place of the hallelujahs of the “solemn feast.”