Jesus had told the disciples to stay in Jerusalem until the power of the Holy Spirit came, then they were to go tell the world about Him.
Seven coordinating blogs begin here:
https://lightofchristjourney.com/2024/09/08/the-festival-of-pentecost/
Seven short devotional podcasts begin here:
https://www.buzzsprout.com/2308798/15689141
A video of this story can be viewed here: https://youtu.be/JpzQeUrGFTs