Passover sin offering?

It is only found in Numbers 28:16-25.

And only in the week of the feast, Numbers 28:17-25. 7 dairy lambs and one sin offering.

Numbers 28:22, And one goat for a sin offering, to make an atonement for you.

Now Christ the Lamb of God our Passover was also our sin offering.

John 1:29, The next day John seeth Jesus coming unto him, and saith, Behold the Lamb of God, which taketh away the sin of the world.