The Bible records that each Person of the Trinity has made Himself manifestly present in the lives of certain individuals. God the Father spoke to Moses in the burning bush in Exodus 3. God had been with Moses all along, but then, in “the far side of the wilderness” near Mt. Horeb (Exodus 3:1), God chose to manifest Himself. God the Son made Himself manifest through the Incarnation, as John 1:14 says, “The Word became ﬂesh and made his dwelling among us.”
On the Day of Pentecost, the Holy Spirit was manifest to the believers in the upper room: “Suddenly a sound like the blowing of a violent wind came from heaven and ﬁlled the whole house where they were sitting. They saw what seemed to be tongues of ﬁre that separated and came to rest on each of them. All of them were ﬁlled with the Holy Spirit and began to speak in other tongues as the Spirit enabled them” (Acts 2:2–4).
The result of the manifest presence of God in the lives of the disciples was a world turned upside-down (see Acts 17:6).