Augustine of Hippo

(Tract. xxxviii. 2) Ye shall seek Me, then, He says, not from compassionate regret, but from hatred: for after He had departed from the eyes of men, He was sought for both by those who hated, and those who loved Him: the one wanting to persecute, the other to have His presence. And that ye may not think that ye shall seek Me in a good sense, I tell you, Ye shall die in your sin. (ἁμαρτίᾳ plural in our Transl.) This is to seek Christ amiss, to die in one’s sin: this is to hate Him, from Whom alone cometh salvation. He pronounces sentence on them prophetically, that they shall die in their sins.