Jeremiah 2:27-28 says, "They have turned their backs to Me and not their faces. Yet when they are in trouble, they say, 'Come and save us!' Where then are the gods you made for yourselves? Let them come if they can save you when you are in trouble!"
God warns His people of old, that if they persisted in looking to their false gods in the time of prosperity--that they would have none but their idols to assist them in the season of adversity. In the same way, in times of prosperity, the unsaved not only neglect God but despise Him as well! They cast off all fear of God and serve their idols, to the utter neglect of God.