"Indeed, I want you to bear" meaning: to return "the sin of killing me and your own sin." Qatada said: This means: "the sin of killing me, and your own sin" which preceded it; meaning: from before my killing.
﴿إِنِّي أُرِيد أَن تبوء﴾ ترجع ﴿بإثمي وإثمك﴾ قَالَ قَتَادَةُ: يَعْنِي: بِإِثْمِي: قَتْلِي، وَإِثْمِكَ: الَّذِي مَضَى؛ يَعْنِي: مِنْ قبل قَتْلِي.