Catholics go to confession to be purged of sin/purge (away) their sin/purge their souls of sin.
天主教徒透过告解以获得赦罪[净化灵魂].
The police tricked him into making a confession.
警察哄骗他作了招认。
By clever questioning they trapped him into making a confession.
他们用巧妙的提问诱使他招认了。