New Defender's Study Bible Notes
5:16 he shall make amends. A distinctive aspect of the trespass offering (or “guilt offering”) was the requirement of reparations plus twenty percent to the one injured (see Leviticus 6:4,5).
5:17 wist it not. The trespass offering, like the sin offering, was to provide an atonement (or “covering”)–see Leviticus 5:6, 10, 16–only for sins committed in ignorance (Leviticus 5:18). The latter could not be overlooked simply by reason of ignorance, however, for the sinner should have known his sin was wrong. When the sin was confessed (Leviticus 5:5) and the sin offering was given, and restitution is made to anyone injured by the sin (Leviticus 5:16), then the sin was forgiven (Leviticus 5:10,13,16,18).
5:19 trespass-offering. This is the fifth type of offering described in Leviticus, the others being the burnt offering, the meal offering, the peace offering and the sin offering, as described in chapters 1, 2, 3 and 4.
5:19 against the LORD. This statement confirms that a trespass against one’s fellow man is also a sin against the Lord.