You can’t love on the people around you if you don’t know them and know what they’re going through. We are gifted with the Spirit who leads us out into the world to speak such that others may hear of God’s great love.
Don’t be a Christian enthusiast (like a bull-horn corner preacher), or a rational reductionist (like an enlightenment scholar), but allow the Spirit of God and your own Spirit testify that you are a child of God.
Pentecost is Christ’s way of calling us out. It’s Christ’s way of putting us on notice. Leave your shut and locked doors, in which you hide in times of fear and uncertainty, and let the power of the Spirit lead you.
The disciples are given a purpose, they are given a mission, but Christ tells them to wait, for they do not yet have the power from on high. Sometimes waiting is a necessary thing.