Acts 2:1-4. What event initiated the Apostles' Palestinian mission, and what gift did they receive enabling them to set off on their mission?

Pentecost, Tongue of Fire

Explanation:

Once Pentecost day had arrived they have all been in one place together.

Then a sound like the rush of a powerful wind came from heaven, and that it covered the entire house where they were perched.

And as of fire, tongues appeared to them, dispersed and rested on every one of them.

Uh Declaration of Independence