Apostle Cosby obtained her Master in Divinity for Phillips Theological Seminary and will earn her Doctor of Ministry (Transformational Leadership and Intercultural Community) from Phillips in December 2023.. Additionally, she received her Clinical Pastoral Education Residency at Jack C. Montgomery VA Hospital, Muskogee, Oklahoma. She earned the designation of Board Certified Clinical Chaplain with the National Association of Veteran Affairs Chaplains (NAVAC).

      She has over 14 years of hospice experience, serving as a chaplain, bereavement counselor, and ultimately the Director of Pastoral Care and the "We Honor Veterans" Program. There, she led the bereavement counselors and chaplains to ensure exceptional pastoral care for hospice patients and their families. As coordinator of the "We Honor Veterans" program, her responsibilities included overseeing enhanced spiritual end-of-life care for veterans.

      She is known for her leadership, integrity, and compassion for all, especially the marginalized in hunger and food scarcity, homelessness, gangs, criminal justice, immigration, and prison reform. Over the years, Apostle Cosby has served on numerous boards throughout the State of Oklahoma but now chooses to dedicate her time to the Mayor's Police and Community Coalition and the Tulsa Police Community Advisory Board. Because of her significant record of working with vulnerable populations, Cosby has received awards and recognition from the Oklahoma House of Representatives, State Senate, City of Tulsa Mayor's Office, Oklahoma Department of Corrections, and 100 Black Men, to name a few.

      While Apostle Cosby is a well-sought-after speaker and lecturer, she says, "I am most grateful for being blessed to be a mother and grandmother, but my greatest accomplishment is being God's servant."