Ezekiel 21:31 And I will pour out mine indignation upon thee, I will blow against thee in the fire of my wrath, and deliver thee into the hand of brutish men, and skilful to destroy.
Not only will He allow them to suffer He is going to cause it. He will bring His wrath on them. They have chosen to rebel. They have worshiped false gods. Now God will turn them over to harsh and cruel people to make them realize how much their sin has cost them.
God does discipline His people. Sin is not free and easy. You really can’t do what you want and get away with it!