Complex sentence: Reformed and evangelical opponents, like John MacArthur, do not believe that such generosity is appropriate, citing the movement's shift away from traditional evangelical beliefs such as eternal punishment and penal substitution towards a reintroduction of, for example, elements of ancient mysticism.
Split into simpler sentences: Reformed and evangelical opponents, such as John MacArthur, do not believe such generosity is appropriate. They cite the movement's shift away from traditional evangelical beliefs such as eternal punishment and penal substitution towards a reintroduction of, for example, elements of ancient mysticism.