To whom also he showed himself alive after his passion by many infallible proofs, being seen of them forty days, and speaking of the things pertaining to the kingdom of God:
All Commentaries on Acts 1:3 Go To Acts 1
John Chrysostom
AD 407
and speaking of the kingdom of God: For, since the disciples both had been distressed and troubled at the things which already had taken place, and were about to go forth to encounter great difficulties, He recovered them by His discourses concerning the future.