Yes, the term 'prayer meeting truth' is grammatically correct.

The compound noun 'prayer meeting' is used to describe the noun 'truth'. A noun functioning as an adjective to describe another noun is called an attributive noun.

Some other examples of the compound noun 'prayer meeting' used to describe a noun could be:

prayer meeting supper; prayer meeting sermon; prayer meeting fund-raiser (a compound noun describing a compound noun).

Praying at the beginning of a church meeting is a common occurrence. The Lords Prayer is a good example of a prayer that would be recited at the opening of a meeting.

Great awakening?

shitStushki

Almost every meeting of any Catholic group, including classes in Catholic schools, begin with a prayer to ask God's blessings on the group and their work.