AMO 8:10

10 I will cause your [religious] celebrations to become times when you mourn; instead of singing, everyone will be weeping. Because of what I [will do], all of you will wear rough sackcloth and shave your heads [to show that you are sorrowing]. I will cause that time to be like when people mourn after an only son [has died]. All of you will be extremely sad all of that day.”