And you shall put all in the hands of Aaron, and in the hands of his sons; and shall wave them for a wave offering before the LORD.
All Commentaries on Exodus 29:24 Go To Exodus 29
George Leo Haydock
Elevating, and then letting them descend towards the earth. After which, Moses lifted the victims towards the east and west, and from north to south, to show that God is the Sovereign of the world. (R. Solomon)
Cato (Rustic. 34,) mentions a similar custom, of agitating or waving bread, in honour of Janus and of Jupiter. (Calmet)