It is a trespass offering. —That is, though the prescribed fifth part is here dispensed with, it is still a trespass offering, for…

It [is] a trespass [offering]
An offering for a trespass committed:

he has certainly trespassed a…

Here are offerings to atone for trespasses against a neighbor. If a person unknowingly put to their own use anything dedicated to God, they were to…