Answer:
The chanted commentaries added to embellish biblical text in church services are known as mysteries
Step-by-step explanation:
“Mystery” in religious terms refers to a sacred secret. It is something that had been hidden in the past but was eventually revealed. This talks about the secrets that had been hidden in the Old Testament are revealed in the New testament. There are other uses of the word mystery en religious such as "mystery can be something about god that humans cannot completely comprehend" and "mystery may refer to something about God that cannot logically be understood". All this is deeply connected to faith.