Leviticus 23:27 introduces the Day of Atonement with the same requirement to afflict one's soul—verse 29 adds the penalty for failing.

Leviticus 23:32 elaborates on the Day of Atonement—sabbath rest and afflicting soul from evening—connected to the penalty in verse 29.

Genesis 17:14 uses the same 'cut off from his people' formula for uncircumcised males — a parallel covenantal penalty for failing a core requirement.

Exodus 30:33 also applies 'cut off from his people' for misuse of sacred anointing oil — same punishment formula for holy things.

Ezra 8:21 describes a fast to humble themselves — the same self-denial required on Yom Kippur. Shared practice of affliction before God.