The "Didache," also known as "The Teaching of the Twelve Apostles," is an ancient Christian text that was likely arranged in its present form in the early second century AD, although the exact date is debated among scholars.
The doctrine of the Didache is that of the early Church, simple formulas and a vivid Jewish flavor in a lot of statements.
It was considered an important text in the early Christian church, and was widely circulated and used alongside the canonical New Testament texts in some regions.