Debre Libanos (Amharic: ደብረ ሊባኖስ) is an Ethiopian Orthodox Tewahedo monastery, lying northwest of Addis Ababa in the North Shewa Zone of the Oromia Region.

It then became one of the most important religious institutions of Ethiopia, not only founding a number of daughter houses, but its abbot became one of the principal leaders of the Ethiopian Church, called the Echege, second only to the Abuna.

[5] Although the Ichege intervened to protect the Gambo people during the reign of Sarsa Dengel,[6] the buildings were not completely rebuilt until after the visit of Emperor Iyasu the Great in 1699.

[8] From the 17th century until the matter was resolved in a synod convened by Emperor Yohannes II, the Ichege and the monks of Debre Libanos were the most important supporters of the Sost Lidet doctrine, in opposition to the House of Ewostatewos.

The date chosen for the massacre, 20 May (12 Ginbot), marked the annual celebration of the transfer of St Tekelehaimanot (the saint for the monastery was constructed) to the shrine.

[17] Subsequent to her research and that of Getatchew Haile and Ted Erho, the School of Divinity recognised in 2012 that Tweed MS150 had been microfilmed as part of a UNESCO project in 1976 when it was in Debre Libanos.

[18] Arrangements for the return were put in train and in 2016 a contingent from the School of Divinity travelled with the manuscript to Ethiopia, the official handover ceremony taking place on 11 January.