Leviticus 9:1

Inauguration of Tabernacle Worship

9:1 On the eighth day Moses summoned Aaron and his sons and the elders of Israel,

Leviticus 12:3

12:3 On the eighth day the flesh of his foreskin must be circumcised.

Leviticus 22:28

22:28 You must not slaughter an ox or a sheep and its young on the same day.

Leviticus 23:35

23:35 On the first day is a holy assembly; you must do no regular work.