ὁ δὲ παρήγγειλεν (he/she/it commanded) αὐτοῖς μηδενὶ εἰπεῖν (to speak).

δὲ παρήγγειλεν (he/she/it commanded) αὐτοῖς μηδενὶ εἰπεῖν (to speak).

And he commanded them to speak to no one.