ירמיהו, פרק ז׳, פסוק ל׳

A severe spiritual crisis overtook the kingdom of Judah, reaching its breaking point with the desecration of the holiest possible space. The people displayed profound ingratitude and audacity, as they were not satisfied with committing sins outside the Temple walls. Instead, they dragged impurity directly into the house of God. The primary offense was the physical introduction of abominable idols into the very sanctuary that bore His name [מצודת ציון, מצודת דוד]. Rather than keeping the Temple exclusively dedicated to the worship of God, they filled it with statues and erected altars for foreign gods right alongside the holy vessels [ביאור שטיינזלץ].

This invasion of the sanctuary was an act of extreme defiance. It is compared to the ultimate betrayal of a husband bringing a rival lover directly into his wife's own home [מלבי״ם]. The direct intent behind this action was to actively defile the Temple [מצודת דוד]. Historically, this desecration did not happen in a vacuum. It was driven by the wicked kings Ahaz and Manasseh, who led the people of Judah astray and normalized these practices [רד״ק, אברבנאל].

The corruption within the Temple was part of a much wider and more extreme moral collapse. The same individuals who brought idols into God's house also embraced incredibly cruel rituals, most notably the burning of their own sons and daughters in fire. These horrific practices stood in complete opposition to the will of God. He never commanded such brutal acts in His Torah, nor did it ever cross His mind to require them as a form of worship [מלבי״ם, אברבנאל].