A.T. Robertson Commentary Acts 10:42

"And he charged us to preach unto the people, and to testify that this is he who is ordained of God [to be] the Judge of the living and the dead." — Acts 10:42 (ASV)

He charged (παρηγγειλεν). First aorist active indicative as in 1:4. There Jesus is the subject and so probably here, though Page insists that ο θεος (God) is here because of verse 40.

To testify (διαμαρτυρασθα). First aorist middle infinitive. See on 2:40.

Ordained (ωρισμενος). Perfect passive participle of οριζω, old verb, to mark out, to limit, to make a horizon.

Judge (κριτης). The same point made by Peter in 1 Peter 4:5. He does not use the word "Messiah" to these Gentiles though he did say "anointed" (εχρισεν) in verse 38. Peter's claim for Jesus is that he is the Judge of Jew and Gentile (living and dead).