Historical clue formulations

• Blasphemes — 2024-05-15
• Takes an oath — 2023-02-19
• Drops an f-bomb, say — 2021-01-24
• Says "@#%!" — 2015-04-13
• Attests — 2013-02-10
• Vows — 2011-10-13
• Says on a stack of Bibles — 2008-05-05
• Says with a raised hand — 2006-04-09
• Takes an oath — 2002-05-28
• Has no doubt whatever — 2000-02-04
• Says on a stack of Bibles — 1995-04-19
• Asseverates — 1994-08-21