Now this shall be a sign to you that will come upon your two sons, on Hophni and Phinehas: in one day they shall die, both of them.
1 Samuel 2:34
Surrounding context
2:33 But any of your men whom I do not cut off from My altar shall consume your eyes and grieve your heart. And all the descendants of your house shall die in the flower of their age.
2:34 Now this shall be a sign to you that will come upon your two sons, on Hophni and Phinehas: in one day they shall die, both of them.
2:35 Then I will raise up for Myself a faithful priest who shall do according to what is in My heart and in My mind. I will build him a sure house, and he shall walk before My anointed forever.