"Let them give thanks to the Lord for his unfailing love and his wonderful deeds for men." Psalm 107:8
| 1941 | First service on Easter Sunday, April 13, in the living room of private home on the corner of Holly Avenue and Mineral Point Road. Thirteen attend. |
| 1942 | Harold Heuberger is installed at first pastor on July 12. Congregation formally organizes. Sunday School begins. |
| 1943 | Congregation purchases land at Mineral Point Road and Westmoreland Boulevard. |
| 1945 | First confirmation class meets in Calvary Student Chapel on State Street. Seven members attend. |
| 1946 | Church begins offering two Sunday services to relieve crowding. Groundbreaking ceremony for new building is on July 6. A parsonage is purchased at 4125 Euclid Avenue. |
| 1947 | First worship service in new building at 4018 Mineral Point Road is held in the unfinished basement. |
| 1949 | Pastor Neuberger accepts a call to Milwaukee. William Rohlwing accepts a call to be Pastor at Mount Olive. |
| 1954 | Adult bible study class meets for the first time. |
| 1957 | Congregation meets in Hoyt Park for an outdoor worship service. |
| 1960 | New parsonage is purchased at 4014 Mineral Point Road. |
| 1962 | Groundbreaking ceremony for new, larger building. Last service held in original church is November 24. First service in new church is December 2 in the basement Fellowship Hall. |
| 1963 | Church building is dedicated during two worship services, March 31 and April 7. |
| 1964 | Midweek Christian Education program, Chapel School, starts. |
| 1966 | Bernard H. Arkebauer is installed as Director of Christian Education and Music. |
| 1968 | Moller pipe organ is installed and dedicated. |
| 1970 | Communion schedule is changed to be either at early or late service on alternate Sundays. |
| 1974 | Building added new offices upstairs and Luther Room on lower level. Horst William Jordan is installed as Associate Pastor. |
| 1976 | Mount Olive celebrates 35th anniversary. |
| 1977 | Phyllis Weiderhoeft is installed as Director of Education, Youth, and Music. |
| 1978 | Pastor Jordan leaves Mount Olive to accept a call to Sheboygan. |
| 1980 | Larry Thies is installed as Assistant Pastor. |
| 1982 | Pastor Rohlwing retires. Pastor Thies is installed as Senior Pastor. |
| 1984 | Phyllis Wiederhoeft resigns as Director of Education, Youth, and Music. Bernard H. Arekebauer dies and a garden is created in his memory. James Knuth is installed as Pastor. |
| 1986 | The church sponsors missionaries John and Jeannette Eggert in Papua, New Guinea. |
| 1987 | Mount Olive Christian Preschool opens under the direction of Janelle Tonsager. |
| 1989 | Bonnie Broderick is installed as Christian Counselor and has office hours at Mount Olive. Robert Boehler is installed as Pastor, following the resignation of Pastor Knuth. |
| 1991 | Mount Olive celebrates their 50th anniversary. The Voter’s Assembly initiates an expansion project to create new classrooms and an office wing. |
| 1993 | Groundbreaking ceremony for education/office addition. House at 333 Westmoreland Boulevard is moved to prepare for construction. New building adds 11,400 square feet and is dedicated December 5, 1993. |
| 1994 | Mount Olive begins practice of 5th grade communion. |
| 1997 | First youth servant event to Mexico. Todd Clark begins a year of internship as Director of Christian Education. |
| 1999 | Dan Freiburger is hired as Coordinator of Youth Ministry. |
| 2003 | A call is extended to Janelle Tonsager to be Preschool Director. |
| 2004 | Dan Frieburger resigns as Youth Coordinator. Tina Thompson is hired as Coordinator of Youth Ministry. |
| 2005 | Jill Emmons begins the first Parish Nurse program at Mount Olive. Wheels to Worship, a member service that provides cab rides to worship, begins. Pastor Boehler accepts a call to Concordia University, Bronxville, New York. |
| 2006 | Tina Thompson resigns as Youth Coordinator. |
| 2007 | Jill Emmons resigns as Parish Nurse. Pastor Thies retires. Robert Degner accepts call to Intentional Interim Minister at Mount Olive. |
| 2008 | After looking at many building options, Mount Olive congregation decides to make an offer to purchase the property at 110 North Whitney Way. Offer is accepted. Karen Marshall is hired and later resigns as Parish Nurse. |
| 2009 | Jason Zobel is installed on August 16. Congregation has final worship service at 4018 Mineral Point Road on September 20. The following Sunday, led by the cross, members and friends walk together to their new church home at 110 North Whitney Way. Dedication service and celebration occurs throughout the day. |
| 2011 | Ben Ahlersmeyer is installed as Vicar at Mount Olive. |