Acts 1:1-3 New English Translation (NET Bible)
Jesus Ascends to Heaven
1 I wrote the former account, Theophilus, about all that Jesus began to do and teach 2 until the day he was taken up to heaven, after he had given orders by the Holy Spirit to the apostles he had chosen. 3 To the same apostles also, after his suffering, he presented himself alive with many convincing proofs. He was seen by them over a forty-day period and spoke about matters concerning the kingdom of God.