Marvin Adams grew up in Shelbyville, Tennessee, and then attended Emory University in Atlanta, Georgia, where he received his bachelor of arts degree. He then pursued his bachelor of divinity degree from Chandler School of Theology, in Atlanta, graduating in 1940. He was ordained a Methodist-Episcopal minister, and moved with his wife to Saint Ignatius, Montana where he was district superintendent appointee, subsequently serving in the same capacity at Arlee and Dixon, Montana. He was received into the Montana conference in June 1940, and then received full connection with the Montana Methodist Conference in 1942, and transferred to Valier, Montana. He entered military service in September 1943 and was appointed a U.S. Army chaplain, serving until 1945, including service in the European Theater of Operations during World War II. After the war he was appointed pastor of the Methodist church at Glendive, Montana, and in 1948 of the First Methodist Church in Bozeman. After other pastorates in Montana, in 1968 he moved to Greely, Colorado, where he pastored the Greely First United Methodist Church, and had just been reappointed for his 12th year as senior pastor at the time of his death.