Vincent's NT Word Studies
22. They perceived (epegnwsan). Clearly perceived. See on Matthew vii. 16, and verse 4.He beckoned (hn dianeuwn). Better Rev., continued making signs. Again the participle with the finite verb, denoting frequent repetition of the same signs. Wyc., was beckoning.
Robertson's NT Word Studies
1:22 {Perceived} (epegnwsan). Second aorist indicative. Clearly knew because he was not able to pronounce the benediction from the steps (#Nu 6:24-26). {Continued making signs} (en dianeuwn). Periphrastic imperfect again. He nodded and beckoned back and forth (dia, between). Further proof of a vision that caused his dumbness.