The Book of the Acts (Practices) of Apostles was written by Luke.
It overlaps the end of his "Gospel" regarding the period of time between
the resurrection of the Lord Jesus Christ and his ascension into heaven,
and this account then continues from that point onwards to the time of
the Apostle Paul's heralding-forth of the kingdom of God and teaching
the things concerning the Lord Jesus Christ with all boldness,
un-hindered, in his own hired house.
This writing gives detailed information regarding the fulfillment of the
promise made by God regarding baptism in holy spirit,
and the activities which occurred following that event on the day of
Pentecost.
The time spans approximately 28 AD through 63 AD.