Albert Barnes Commentary Leviticus 22:19

"that ye may be accepted, [ye shall offer] a male without blemish, of the bullocks, of the sheep, or of the goats." — Leviticus 22:19 (ASV)

Ye shall offer at your own will a male - Rather, That it may be accepted for you it shall be a male. See Leviticus 1:3. It is the same phrase as in Leviticus 22:20-21, Leviticus 22:27.