let them be, if a higher being exists let them be judged on their worth as a human, not on the hours spent praying
the man who leads prayers is called 'Imam' that person can be randomly picked out of a crowd who knows the prayers word
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The correct version is your family are in my prayers because there is more than one person in it.
If the person is paid for the advice, she/he is a counselor or personal coach. If the person gives unsolicited advice and is not paid, she/he is called a nuisance.
The person who leads prayers during religious services is called a Cantor.
"Solo" means one. There is one person performing a solo, and more than one person performing soli.
Words of encouragement and support, and if they are a person of faith , prayers.
A person can read good examples of Christian prayers at the nearest church closest to their house and also they can find prayers online if they search on a Christian website.
A person who gives unwanted advice is usually called a kibitzer.