one kid

Numbers 28:22
Include one male goat as a sin offering to make atonement for you.

Numbers 15:24
and if it was done unintentionally without the knowledge of the congregation, then the whole congregation is to prepare one young bull as a burnt offering, a pleasing aroma to the LORD, with its grain offering and drink offering according to the regulation, and one male goat as a sin offering.

Leviticus 4:23
When he becomes aware of the sin he has committed, he must bring an unblemished male goat as his offering.

Leviticus 16:15
Aaron shall then slaughter the goat for the sin offering for the people and bring its blood behind the veil, and with its blood he must do as he did with the bull's blood: He is to sprinkle it against the mercy seat and in front of it.

Romans 8:3
For what the Law was powerless to do in that it was weakened by the flesh, God did by sending His own Son in the likeness of sinful man, as an offering for sin. He thus condemned sin in the flesh,

2 Corinthians 5:21
God made Him who knew no sin to be sin on our behalf, so that in Him we might become the righteousness of God.

beside

Numbers 28:3, 10, 11
And tell them: This is the offering by fire you are to present to the LORD: two unblemished year-old male lambs, as a regular burnt offering each day. . . .