Numbers 9:2 gives the command to keep Passover at its appointed time—the very obligation that is neglected here, resulting in being cut off.

Numbers 9:3 specifies the exact timing and rules for keeping Passover—the specific requirement that failing to observe leads to the penalty in this verse.

Numbers 9:7 shows people who were unclean but wanted to keep Passover—contrasting with the clean person here who deliberately neglects it.

Numbers 15:30 uses the same 'cut off' penalty for defiant sin — directly parallel to the consequence for neglecting Passover here.

Numbers 15:31 adds that such a person despises God's word — explaining the basis for the same 'cut off' penalty.

Numbers 19:13 also imposes 'cut off' for neglecting purification after touching a dead body — similar penalty for ritual neglect.

Genesis 17:14 applies the same 'cut off' penalty to uncircumcision — another covenant sign failure with identical consequence.

Exodus 12:15 uses 'cut off' for eating leavened bread during Passover — same penalty in the same festival context.

Leviticus 17:4 imposes 'cut off' for failing to bring sacrifices to the tabernacle — parallel penalty for worship neglect.

Leviticus 17:10 imposes 'cut off' for eating blood — another dietary violation with same severe penalty.

Hebrews 10:26-29 explicitly uses the OT principle of willful sin under Moses (death penalty) to argue greater judgment for rejecting Christ—directly echoing this verse's logic.

Exodus 12:19 imposes the same 'cut off' penalty for eating leavened bread during Unleavened Bread — a parallel consequence for feast violations.

Exodus 12:47 commands all Israel to keep the Passover; this verse enforces that command with a penalty for neglect.

Exodus 30:33 also uses 'cut off' as penalty for misusing holy anointing oil — a parallel formula for sacred regulation violations.

1 Corinthians 11:27 warns against unworthy partaking of the Lord's Supper, which fulfills the Passover — a typological parallel of penalty for mishandling the sacred meal.