swear on a stack of Bibles
Definition from Wiktionary, a free dictionary
[edit] English
[edit] Verb
- (idiomatic) To make a promise or give one's assurance with great conviction.
- 1962, "Sheer Coincidence," Time, 13 Jul.,
- Says L.A. Times Managing Editor Frank McCulloch: "I know it looks bad, but I'll swear on a stack of Bibles it's a sheer coincidence."
- 1962, "Sheer Coincidence," Time, 13 Jul.,