'Wave offering' in the Bible

"If the offeror is poor and cannot afford the regular offering, then he is to take one lamb for a guilt offering that will be presented in the form of a wave offering to atone for him, one tenth of a measure of fine flour mixed with olive oil for a grain offering, one log of olive oil,

"Starting the day after the Sabbath, count for yourselves seven weeks from the day you brought the sheaf of the wave offering. They are to be complete.