Õpetuses
Õpetuses is an Estonian term tied to the ideas of teaching and instruction. In Estonian grammar, õpetus refers to instruction, doctrine, or a manual, and the form õpetuses is the inessive singular meaning “in the teaching” or “in the instruction.” The plural form õpetused denotes multiple teachings or instructional texts. The word is commonly found in religious, educational, and philosophical writings to indicate content that conveys rules, beliefs, or methods.
In religious contexts, õpetus and its derivatives are used to describe doctrinal statements or catechetical material.
Etymology and related forms: õpetus derives from the verb õpetama (to teach) and the noun-forming suffix -us,
See also: õppetus or õpetus (as a general term for instruction or doctrine), käsiraamat (manual), katekismus (catechism)