And now (kai nun). Luke is fond of these particles of transition (Act 7:34; Act 10:5; Act 20:25; Act 22:16) and also kai ta nun (Act 4:29; Act 5:38; 22:32; Act 27:22), and even kai nun idou (Act 13:11; Act 20:22).
I wot (oida). Old English for “I know.”
In ignorance (kata agnoian). This use of kata occurs in the Koiné. See also Phm 1:14. One may see note on Luk 23:34 for the words of the Saviour on the Cross. “They had sinned, but their sin was not of so deep a dye that it could not have been still more heinous” (Hackett). If they had known what they were doing, they would not knowingly have crucified the Messiah (1Co 2:8).