high places - the scene of idolatries which were spiritual adulteries.
In ... ways ... sat for them - watching for lovers like a prostitute (Gen 38:14, Gen 38:21; Pro 7:12; Pro 23:28; Eze 16:24, Eze 16:25), and like an Arab who lies in wait for travelers. The Arabs of the desert, east and south of Palestine, are still notorious as robbers.