Acts 1:1-3 CSB

Prologue

1 I wrote the first narrative, Theophilus, about all that Jesus began to do and teach

References for Acts 1:1

      2 until the day He was taken up, after He had given orders through the Holy Spirit to the apostles whom He had chosen.
      3 After He had suffered, He also presented Himself alive to them by many convincing proofs, appearing to them during 40 days and speaking about the kingdom of God.