ምናልባት ኢዛና እና ሲዛና ኦርቶዶክስ ሲሆኑ ሊሆን ይችላል ግን ከዛ በፊት የ ኦሪት መስዋዕት የሚቀርብበት ገዳም እና ዋሻ ነበር

I heared that ተድባበ ማርያም( located in አማራ ሳይንት፣ወሎ) dates solid 3000 yrs....

I dont understand the question but if its the beginning you ask for well its complicated but that is the teaching jesus tought to the deciples and their deciples and so on from the first 120 families till today.

I don't know exactly...but I found it interesting when I found out Ethiopians started practicing Christianity way before Europeans.

3rd century AD they were official