Being seen by them forty days — That is, many times during that space. And speaking of the things pertaining to the kingdom of God — Which was the sum of all his discourses with them before his passion also.
Related Commentaries of Acts 1:3
Acts 1:3
3 To whom also he shewed 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: