Charles Ellicott 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)

And he commanded us to preach unto the people. No such command is explicitly found in the Gospel narratives of the words of the risen Lord, but it is partly implied in Matthew 28:18-20, and is covered by the general teaching about the things of the kingdom of God in Acts 1:3. It is interesting to note that St. Peter and St. Paul agree in this way in connecting the Resurrection with the assurance that He who had risen was to be the future Judge of all men .

Which was ordained.—More accurately, which has been ordained.