וְנִתַּצְתֶּ֣ם אֶת־מִזְבּחֹתָ֗ם וְשִׁבַּרְתֶּם֙ אֶת־מַצֵּ֣בֹתָ֔ם וַאֲשֵֽׁרֵיהֶם֙ תִּשְׂרְפ֣וּן בָּאֵ֔שׁ וּפְסִילֵ֥י אֱלֹֽהֵיהֶ֖ם תְּגַדֵּע֑וּן וְאִבַּדְתֶּ֣ם אֶת־שְׁמָ֔ם מִן־הַמָּק֖וֹם הַהֽוּא׃
Sifrei Devarim
(Devarim 12:3) "And you shall raze their altars": This is an altar that was built originally for idolatry.