The doctrine of this sect was declared a heresy by both Western and Eastern Christian authorities, and according with a resolution of the Council of Trier (1231) they were persecuted.

The doctrine of the Euchites was very similar to that of the Bogomils and Luciferians. They did not recognise the sacraments of the Christian church, considered Lucifer as the elder son of God, and, based on the idea that the direct descendants of Adam and Eve had to practise it to procreate, admitted incest among their members. Homosexuality was also considered a natural practice among them, and virginity in women had no value to the members of this cult.