If the transgression involved either a desecration of some holy thing or a direct violation of one of God's commandments, then a ram was required. If a person heard someone make a commitment and then failed to testify in defense of whoever was supposed to be the recipient of that commitment; or, if a person touched any unclean thing such as an animal carcass or some human pollution; or, if a person made a rash commitment ... he was to consider himself guilty. A simpler trespass offering was demanded (i.e. a lamb, kid, dove, etc.).