Leviticus 5:2-5

CLV(i) 2 or when a soul touches any unclean thing, whether the carcass of an unclean animal or the carcass of an unclean domestic beast or the carcass of an unclean swarmer, even if it is obscured from him he has become unclean and has incurred guilt;" 3 or when he touches human uncleanness, any of its uncleanness by which he would be unclean, even if it is obscured from him, when he himself realizes it, then he is guilty;" 4 or when a soul swears, talking rashly with the lips to do evil or to do good as to anything of which a human talks rashly in an oath, even if it is obscured from him, when he himself realizes it, then he is guilty as to any one of these. 5 It will come to be when he realizes his guilt as to any one of these instances then he will confess in what way he has sinned;