A.T. Robertson Commentary Luke 13:27

"and he shall say, I tell you, I know not whence ye are; depart from me, all ye workers of iniquity." — Luke 13:27 (ASV)

I know not whence ye are (ουκ οιδα ποθεν εστε). This blunt statement cuts the matter short and sweeps away the flimsy cobwebs. Acquaintance with Christ in the flesh does not open the door. Jesus quotes Ps 8:9 as in Mt 7:23, there as in the LXX, here with παντες εργατα αδικιας, there with ο εργαζομενο την ανομιαν. But αποστητε (second aorist active imperative) here, and there αποχωρειτε (present active imperative).