38 If the legislation of the Eastern Church is different in the matter of discipline with regard to clerical celibacy, as was finally established by the Council of Trullo held in the year 692, (77) and which has been clearly recognized by the Second Vatican Council, (78) this is due to the different historical background of that most noble part of the Church, a situation which the Holy Spirit has providentially and supernaturally influenced. We Ourselves take this opportunity to express Our esteem and Our respect for all the clergy of the Eastern Churches, and to recognize in them examples of fidelity and zeal which make them worthy of sincere veneration.
Source: Sacerdotalis Caelibatus (Vatican.va)