12. τὸ … ἅγιον Πνεῦμα διδάξει ὑμᾶς. A similar promise had been given to Moses, Exo 4:12-15; see Luk 21:15. For fulfilments of the promise, see Act 6:8; Act 6:10 (St Stephen); 2Ti 4:17 (St Paul), &c.
αὐτῇ τῇ ὥρᾳ. Not “in the same hour” (as in A.V[264]) but “in that very hour.” This is St Luke’s more emphatic phrase for the τῇ ὥρᾳ ἐκείνῃ of the other Gospels.