Leviticus 5:3-5

New International Version - UK

³ or if they touch human uncleanness (anything that would make them unclean) even though they are unaware of it, but then they learn of it and realise their guilt; ⁴ or if anyone thoughtlessly takes an oath to do anything, whether good or evil (in any matter one might carelessly swear about) even though they are unaware of it, but then they learn of it and realise their guilt – ⁵ when anyone becomes aware that they are guilty in any of these matters, they must confess in what way they have sinned.