burn ... houses upon whose roofs ... incense unto Baal - retribution in kind. They burnt incense to Baal, on the houses, so the houses shall be burnt (Jer 19:13). The god of fire was the object of their worship; so fire shall be the instrument of their punishment.
to provoke me - indicating the design, not merely the event. They seemed to court God’s “anger,” and purposely to “provoke” Him.