Acts 1, 1-3 Appearing to them during forty days

Acts of Apostles
Acts 1

(Acts 1, 1-3) Appearing to them during forty days

[1] In the first book, Theophilus, I dealt with all that Jesus did and taught [2] until the day he was taken up, after giving instructions through the holy Spirit to the apostles whom he had chosen. [3] He presented himself alive to them by many proofs after he had suffered, appearing to them during forty days and speaking about the kingdom of God.

(CCC 639) The mystery of Christ's resurrection is a real event, with manifestations that were historically verified, as the New Testament bears witness. In about a.d. 56 St. Paul could already write to the Corinthians: "I delivered to you as of first importance what I also received, that Christ died for our sins in accordance with the scriptures, and that he was buried, that he was raised on the third day in accordance with the scriptures, and that he appeared to Cephas, then to the Twelve…" (1 Cor 15:3-4). The Apostle speaks here of the living tradition of the Resurrection which he had learned after his conversion at the gates of Damascus (Cf. Acts 9:3-18). (CCC 647) O truly blessed Night, sings the Exsultet of the Easter Vigil, which alone deserved to know the time and the hour when Christ rose from the realm of the dead! ("O vere beata nox, quae sola meruit scire tempus et horam, in qua Christus ab inferis resurrexit!"). But no one was an eyewitness to Christ's Resurrection and no evangelist describes it. No one can say how it came about physically. Still less was its innermost essence, his passing over to another life, perceptible to the senses. Although the Resurrection was an historical event that could be verified by the sign of the empty tomb and by the reality of the apostles' encounters with the risen Christ, still it remains at the very heart of the mystery of faith as something that transcends and surpasses history. This is why the risen Christ does not reveal himself to the world, but to his disciples, "to those who came up with him from Galilee to Jerusalem, who are now his witnesses to the people" (Acts 13:31; cf. Jn 14:22).