Bible Verses About Public Prayer: God promises to hear

And my people, upon whom my name is called, being converted, shall make supplication to me, and seek out my face, and do penance for their most wicked ways: then will I hear from heaven, and will forgive their sins and will heal their land.

For I have chosen, and have sanctified this place, that my name may be there for ever, and my eyes and my heart may remain there perpetually.