Absolutely. The Psalms are for all Christians. However, respect the Ethiopian Orthodox cultural context—avoid unauthorized liturgical use (e.g., acting as a dabtara without training).
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(May the Lord hear you in the day of trouble; may the name of the God of Jacob defend you.) Absolutely
Mezmure Dawit " refers to the Psalms of David , a central text in Ethiopian Orthodox Tewahedo Christianity used for prayer, education, and spiritual meditation. U.S. Department of Education (.gov) Context & Availability Educational Use mezmure dawit in amharic pdf 20