They should perform an open act of faith.
"The Expositor's Bible: The Book of Exodus"
G. A. Chadwick
Was it possible-perhaps it was possible-that Athena was speaking in good faith?
"Jane Oglander"
Marie Belloc Lowndes
"Aye, faith," Anna would say, "it's purty bad, but it's worse where there's none at all!"
"My Lady of the Chimney Corner"
Alexander Irvine