Check out these articles written by Dr. Whitcomb:
THE BOOK of ACTS CHAPTERS 1 - 3
"The Ascension of Christ in a Glorified Body to the
Right Hand of His Father in Heaven"
A study in Acts Chapter 1
"The Birthday of the Church"
A study in Acts Chapter 2
"The Reoffering of the Kingdom"
A study in Acts Chapter 3
Dr. John Whitcomb and Pastor George Zeller