Which book describes the Ascension of Christ?

The book that describes the Ascension of Christ is Acts. This event is a significant moment in the New Testament where Jesus, after His resurrection, ascends into heaven in the presence of His disciples. The first chapter of Acts provides a detailed account of this event, including Jesus’ last instructions to His followers and the promise of the Holy Spirit.

While the Gospel of Luke does mention the Ascension, it is less detailed than the account given in Acts, where Luke continues to narrate the early church's history. Therefore, while all the mentioned books contribute to the understanding of Jesus’ life and ministry, it is in Acts that the Ascension is recorded in a comprehensive and systematic manner as part of the unfolding story of the early church.