Monday of the Holy Spirit

Sunday of Pentecost

On this day, the Monday of Pentecost, we celebrate the All-Holy and Life-Creating and Omnipotent Spirit, Who is God, and One of the Trinity, and of one Honor and one Essence and one Glory with the Father and the Son.

Why did the Holy Spirit appear as fire?

You have heard that the Holy Spirit descended upon the disciples in tongues of fire. But why did the Holy Spirit, co-eternal with the Father and the Son, appear as fire?