פּירוש אויף בראשית 3:9

איכה WHERE ART THOU — He knew where he was, but He asked this in order to open up a conversation with him that he should not become confused in his reply, if He were to pronounce punishment against him all of a sudden. Similarly in the case of Cain, He said to him, (4:9) “where is Abel thy brother?” Similarly with Balaam, (Numbers 22:9) “what men are these with thee?” — to open up a conversation with them; so, also, in the case of Hezekiah with reference to the messengers of Merodach-baladan (Isaiah 39:3).

ויקרא..איכה, He called out “where are you?” G’d used these words as an opener for the conversation, not because He was unaware of their whereabouts. We find a repeat of this when G’d opened His conversation with Kayin (Genesis 4,9) or with Moses (Exodus 4,2).

Where are you. Why do you not show yourselves openly as before?