It ought to be well-known that Rome’s dogma of the Immaculate Conception was denied by her leading medieval saint, Thomas Aquinas (as outlined here). This has been something of a thorn in the side of those contending that Mary was immaculately conceived. They have tried to explain Aquinas’ position away in various ways – such as by arguing that Aquinas
Alpha and Omega Ministries is a Christian apologetics organization based in Phoenix, Arizona. James White, director, is a professor, having taught Greek, Systematic Theology, and various topics in the field of apologetics for numerous schools.