Numbers 29:5

And one kid of the goats for a sin offering, to make an atonement for you:

Cross-reference

Numbers 28:15 also commands a male goat sin offering for the new moon, mirroring the atonement pattern here.

Numbers 28:22 uses identical wording—'one male goat for a sin offering, to make atonement for you'—for the Feast of Unleavened Bread.

Numbers 28:30 prescribes the same male goat sin offering for Pentecost, showing consistent atonement practice.