Take of the congregation - i. e. they were to be supplied at the public cost.
Two kids of the goats - This should be, two shaggy he-goats (Leviticus 4:23 note), of the same color, size, and value.
Related Commentaries of Leviticus 16:5
Leviticus 16:5
5 And he shall take of the congregation of the children of Israel two kids of the goats for a sin offering, and one ram for a burnt offering.