The Trinity is not just a confusing theological argument for Christianity being a monotheistic faith, it’s a joyful proclamation that God, in the person of the Father, and the Son, and the Holy Spirit, has maintained a central focus of giving, redeeming, and reconciling the life of creation.
As Christ ascended, he promised to send *another* advocate, so that the work of God, the work done by Christ, the Word exemplified in Christ, the grace extended through Christ, the mercy offered out of Christ, the love witnessed because of Christ – that all these works may not cease to be, but that we, empowered by the Spirit, might continue these works, and to do even greater works still to come.
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.