Hubert was born in 1907 in Denver to A.E. and Sadie Mitchell. Hubert had one brother Bryant, and two sisters, Helen and Jean. The family moved to Los Angeles in the teens and Hubert’s mother Sadie passed away in 1919. His father married school teacher Jennie Clay, and the family started to attend Angelus Temple. A.E. and Jennie had two daughters, Esther and Marietta.

Hubert attended the Foursquare LIFE Bible College associated with the church, and was involved in music, playing several instruments. He met Helen Pomeroy from Idaho at the school and they married in 1930. For a few years Hubert and Helen conducted evangelistic services in association with Paul Rader’s church in Los Angeles, Hubert was well known for his accordion playing and evangelistic sermons. They sang duets together and Helen also sang solos as she did for Angelus Temple’s pageants.

In 1934, Hubert and Helen went to Indonesia as missionaries to the Kubu Tribe of south Sumatra. A well-known event occurred in Sumatra that turned into a story heard later in churches worldwide, and that is the Story of the Nail, about how Hubert was able to witness to the natives through a miracle of finding a nail in a can of mandarin oranges. In 1940 Helen died three days after giving birth to Jean Marie. This left Hubert with 4 children in a very remote area of Indonesia.

In 1942 Pearl Harbor was attacked. This was followed with the news that the Japanese Imperial Army was marching down the Malayan Archipelago. Hubert with the children and a group of other missionaries, including Hubert’s sister and brother-in-law, David and Helen Morken and children, decided to evacuate. They traveled back to the New York harbor over a period of three months. While many other ships were torpedoed by the German military, they made it, and it was called the “Ghost Ship” for that reason. Surely it was the hand of God protecting them all along the way. (Some of the children in the family on that trip returned to the harbor to remember that trip recently.)

Upon Hubert and the family’s return he continued in ministry. It was also at this time that Hubert saw words by Annie Johnson Flint on a pastor's wall plaque and wrote the hymn, "He Giveth More Grace".

He giveth more grace when the burdens grow greater,
He sendeth more strength when the labors increase,
To added affliction He addeth His mercy,
To multiplied trials, His multiplied peace.

His love has no limit, His grace has no measure,
His power no boundary known unto men,
For out of His infinite riches in Jesus,
He giveth and giveth and giveth again.

When we have exhausted our store of endurance,
When our strength has failed ere the day is half-done,
When we reach the end of our hoarded resources,
Our Father's full giving is only begun.

Source: http://www.hymnal.net/hymn.php/nt/723#ixzz1W1wVwCgu

From 1942-1944 Hubert ministered as Chaplain with the Victory Service Club connected with the Union Rescue Mission.  He started Saturday Night Jubilee at Church of the Open Door/Biola. He married Norwegian missionary to India, Rachel Edvardsen in 1944, having met her through his sister Jean, missionary in India.

For several years he was involved with Youth for Christ, World Vision, The Navigators, and played the piano for Billy Graham crusades worldwide. He was a sought after conference speaker and spoke at the Torrey Conferences for Biola and Navigators conferences and worldwide evangelistic services. Hubert and David were a part of the “Powerhouse Five” prayer group meeting for prayer on top of the hotel building next to Biola downtown Los Angeles. That group consisted of Hubert, David Morken, Bob Pierce, Dawson Trotman, and Dick Hillis.

In 1946 he left Saturday Night Jubilee with David Morken and others and moved to Karwi, India where Rachel had lived for 20 years. Here he started India Youth For Christ and worked with that until 1951. He worked at the head office of Youth For Christ in Wheaton, Illinois from 1952-1954 and then left to start Inter-Church Ministries in Chicago with Bible Studies and early morning prayer groups in business offices in Chicago's Loop and other places.

In 1965, Hubert moved to Los Angeles again to help his mother with the mission organization she founded with Hubert’s father, A.E., who passed away in 1964. Hubert founded Christians in Government in Los Angeles and worked with this group from 1971-1992. Hubert also started a televisitation ministry and wrote the book Putting your Faith on the Line. Hubert passed away in 1995. Rachel passed away in 2000.

Portions of this bio sourced from Margaret Truman’s blog at https://reflectionsonanunusualjourney.blogspot.com/2011/08/hubert-mitchell-man-of-prayer.html