Particularly in relation to passing the death sentence on people convicted primarily on the strength of their own confession, and particularly in relation to the case of Sakineh Ashtiani in Iran.
Deuteronomy says: 'On the testimony of two or three witnesses a man shall be put to death, but no-one shall be put to death on the testimony of only one witness.'
Sakineh's case: http://en.wikipedia.org/wiki/Sakineh_Mohammadi_Ashtiani
http://www.bbc.co.uk/news/world-middle-east-11681837
Deuteronomy says: 'On the testimony of two or three witnesses a man shall be put to death, but no-one shall be put to death on the testimony of only one witness.'
Sakineh's case: http://en.wikipedia.org/wiki/Sakineh_Mohammadi_Ashtiani
http://www.bbc.co.uk/news/world-middle-east-11681837