Note that I may update this as my knowlage grows.

In the bible prayer is defined as a private conversation with God in Matthew 6 verse's 5 6 and 7. ..

Not a public boast about how faithful you are, Pray in silence and if God wants to answer or not he will. And not all prayers are listened to. Reference

https://www.biblegateway.com/blog/2014/07/does-god-ever-refuse-to-answer-our-prayers/