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Lateran Synod of 649

Date
649
Place
Lateran Basilica, Rome

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What it decided

In five sessions (October 649) it condemned Monothelitism and rejected two imperial documents: Heraclius' Ekthesis and Constans II's Typos, which forbade discussing one or two wills. Its 20 canons affirm two natural wills and two natural operations in Christ. Maximus the Confessor was its main theological architect. Constans II had Martin and Maximus arrested; Martin died in exile in Crimea in 655.

Convoked by
Pope Martin I
Canons
20

Who recognises it

None as an ecumenical council; its teaching was confirmed by the Third Council of Constantinople (680–681).