proclaimed and crying human needs are being met. The Seventh-day Adventist Church wants no entangling memberships and refuses any compromising relationships that might tend to water down her distinct witness. However, Adventists wish to be "conscientious cooperators." The ecumenical movement as an agency of cooperation has acceptable aspects; as an agency for the organic unity of churches, it is much more suspect. While not being a member of the World Council of Churches, the Adventist Church has participated in its assemblies in an observer capacity. Criticism The Adventist Church has received criticism along several lines, including what some claim are heterodox doctrines, and in relation to Ellen G. White and her status within the church, and in relation to alleged exclusivist issues. Doctrines Critics such as evangelical Anthony Hoekema (who felt that Adventists were more in agreement with Arminianism) argue that some Adventist doctrines are heterodox. Several teachings which have come under scrutiny are the annihilationist view of hell, the investigative judgment (and a related view of the atonement), and the Sabbath; in addition, Hoekema also claims that Adventist doctrine suffers from legalism. While critics such as Hoekema have classified Adventism as a sectarian group on the basis of its atypical doctrines, it has been accepted as more mainstream by Protestant evangelicals since its meetings and discussions with evangelicals in the 1950s. Notably, Billy Graham invited Adventists to be part of his crusades after Eternity, a conservative Christian magazine edited by Donald Barnhouse, asserted in 1956 that Adventists are Christians, and also later stated, "They are sound on the great New Testament doctrines including grace and redemption through the vicarious offering of Jesus Christ 'once for all. Walter Martin, who is considered by many to be the father of the counter-cult apologetics movement within evangelicalism, authored The Truth About Seventh-day Adventists (1960) which marked a turning point in the way Adventism was viewed: "it is perfectly possible to be a Seventh-day Adventist and be a true follower of Jesus Christ despite heterodox concept". Later on, Martin planned to write a new book on Seventh-day Adventism, with the assistance of Kenneth R. Samples. Samples subsequently authored "From Controversy to Crisis: An Updated Assessment of Seventh-day Adventism", which upholds Martin's view "for that segment of Adventism which holds to the position stated in QOD, and further expressed in the Evangelical Adventist movement of the last few decades." However, Samples also claimed that