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w78 2/15 pp. 30-31 Questions from Readers ***Beyond these basic guidelines the Scriptures do not go and, hence, we cannot do more than counsel in harmony with what the Bible does say. In the past some comments have appeared in this magazine in connection with certain unusual sex practices, such as oral sex, within marriage and these were equated with gross sexual immorality. On this basis the conclusion was reached that those engaging in such sex practices were subject to disfellowshiping if unrepentant. The view was taken that it was within the authority of congregational elders to investigate and act in a judicial capacity regarding such practices in the conjugal relationship.
A careful further weighing of this matter, however, convinces us that, in view of the absence of clear Scriptural instruction, these are matters for which the married couple themselves must bear the responsibility before God and that these marital intimacies do not come within the province of the congregational elders to attempt to control nor to take disfellowshiping action with such matters as the sole basis. Of course, if any person chooses to approach an elder for counsel he or she may do so and the elder can consider Scriptural principles with such a one, acting as a shepherd but not attempting to, in effect, "police" the marital life of the one inquiring.
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g74 6/22 p. 14 The Craving for Excitement ***Typical is the appeal that illicit sex has. It promises excitement because of what is involved and because of what it might lead to as well as because of the intense selfish pleasure expected. So single and married persons toy with immorality and go on to commit fornication or adultery. This craving for excitement causes others to engage in unnatural or perverted acts. Thus some Christian women complain because their husbands want them to become parties in sodomy and oral sex. Needless to say, perverted, unnatural practices are far from expressing love, affection and tenderness for each other. All such sensual behavior is repeatedly condemned in God’s Word.—Rom. 1:24-32; Jas. 4:1, 3.
These are the only references I found on the watchtower cd, as far as marriage is concerned. Though, there were articles alluding to oral sex as perversion and homosexual in origin.
Loruhamah