Classic Videos of a Healing Evangelist and Mega Church Pastor. Evangelist Dag Heward-Mills is a Christian Author, Conference Speaker as well as a Church Planter. He is the founder of two Mega Church denominations: UD-OLGC and UO - FLC 190. He is a famous African Preacher. Dag Heward-Mills is also well known for massive crusades and evangelism in Africa.