I'm thoroughly ashamed of having cheated at cards.
5 seconds sound clip from the The Cowboys (1972) movie soundboard.
You can hear this line at 02:04:06 in the Blu-ray version of the movie.
Quote context
[...]
- Since you mean to hang me... I'd like to atone to my Maker.
- You got one minute. Speak your piece.
- Where to begin? I regret having trifled with married women.
- I'm thoroughly ashamed of having cheated at cards.
- I deplore my occasional departures from the truth.
- Forgive me for taking Your name in vain my Saturday drunkenness, my Sunday sloth.
- Above all, forgive me for the men I've killed in anger and for those I'm about to.
[...]