וַיֹּ֤אמֶר יְהוָה֙ אֶל־קַ֔יִן אֵ֖י הֶ֣בֶל אָחִ֑יךָ וַיֹּ֙אמֶר֙ לֹ֣א יָדַ֔עְתִּי הֲשֹׁמֵ֥ר אָחִ֖י אָנֹֽכִי׃
Lalu Yang Mahakekal berfirman kepada Kain, “Di manakah Habel, adikmu?” Jawabnya, “Aku tidak tahu. Apakah aku penjaga adikku?”
The Midrash of Philo
Why he who had slain his brother makes answer as if he were replying to a man; and says, "I do not know: am I my brother's keeper?" (Genesis 4:9).
That the Worse is wont to Attack the Better
[57] I think that I have now said enough as to those who seem to do good or evil to others. For we have found that it is to themselves that they do the one or the other. Let us investigate what follows. A question is put thus, “Where is Abel thy brother?” (Gen. 4:9). To this question Cain replies, “I know not. Am I my brother’s keeper?” (ibid.). This requires us to consider the point, whether God can strictly be said to ask a question. For he that makes an inquiry or asks a question does so in regard to matters about which he is ignorant, looking for an answer, as the result of which he will know what now he does not know. But all things are known to God, not only things present and things past, but also things future.