Perichoresis (or Circuminsession or Interpenetration) is a term in Christian theology first found within the Church Fathers but now reinvigorated among contemporary figures such as C. Baxter Kruger, Jurgen Moltmann, Miroslav Volf and John Zizioulas, amongst others. The term first appears in Gregory of Nazianzus but was explored more fully in the work of John of Damascus. It refers to the mutual inter-penetration and indwelling within the threefold nature of the Trinity, God the Father, the Son and the Holy Spirit.

Although clear references to full-blown Trinitarian theology in the New Testament are rare, it can be seen between two persons of the Trinity in passages such as the following from John's Gospel:"the Father is in the Son, and the Son in the Father."

The relationship of the Triune God is intensified by the relationship of perichoresis. This indwelling expresses and realizes fellowship between the Father and the Son. It is intimacy. Jesus compares the oneness of this indwelling to the oneness of the fellowship of his church from this indwelling. "That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us (John 17:21)."

Stephen Valentine Patrick William "Steve" Allen (December 26, 1921 - October 30, 2000) was an American television personality, musician, composer, actor, comedian, and writer. Though he got his start in radio, Allen is best known for his television career. He first gained national attention as a guest host on Arthur Godfrey's Talent Scouts. He graduated to become the first host of The Tonight Show, where he was instrumental in innovating the concept of the television talk show. Thereafter, he hosted numerous game and variety shows, including The Steve Allen Show, I've Got a Secret, The New Steve Allen Show, and was a regular panel member on CBS' What's My Line?

Allen was a "creditable" pianist, and a prolific composer, having penned over 14,000 songs,^{[citation needed]} one of which was recorded by Perry Como and Margaret Whiting, others by Steve Lawrence and Eydie Gorme, Les Brown, and Gloria Lynne. Allen won a Grammy award in 1963 for best jazz composition, with his song The Gravy Waltz. His vast number of songs have never been equaled. Allen wrote more than 50 books, has two stars on the Hollywood Walk of Fame and a Hollywood theater named in his honor The Steve Allen Theater.