Matthew 2:7

Tότε Ἡρῴδης λάθρᾳ καλέσας τοὺς μάγους ἠκρίβωσε παρ’ αὐτῶν τὸν χρόνον τοῦ φαινομένου ἀστέρος·

Then Herod secretly called the Magi, determined from them at what time the star appeared,