Final answer:
The Holy Spirit came at Pentecost, fifty days after Easter, to inspire the Apostles to spread the message of Christ in different languages.
Step-by-step explanation:
The time and place were right for the coming of the Holy Spirit at Pentecost because it was fifty days after Easter (Pascha) and the Holy Spirit descended on the Apostles as described in Acts 2. The Holy Spirit inspired the Apostles to preach the crucified and risen Christ in different languages so that all could understand. This event marked the beginning of the early Christian Church and the spread of Christianity throughout the world.