Leviticus 21:1 allows ordinary priests to mourn close relatives, while this verse forbids the high priest even for parents – a clear contrast.

Leviticus 21:2 gives the exception for ordinary priests to mourn parents, directly contrasting with the high priest's absolute prohibition here.

Leviticus 8:12 records the anointing that sanctifies the high priest, providing the basis for his avoidance of corpse defilement in Leviticus 21:11.

Numbers 6:7 applies the same prohibition to the Nazirite vow — like the high priest, the Nazirite must not defile himself even for parents.

Matthew 8:22 echoes the high priest's priority: following God's call overrides even the duty to bury one's father.

Luke 9:60 parallels Matthew 8:22 — prioritizing God's mission over burial duty, echoing the high priest's requirement.

Numbers 19:11 establishes the general law of corpse defilement that the high priest is forbidden to contract, even for relatives.

Numbers 9:6 illustrates ordinary Israelites defiled by a dead body, an example of the defilement the high priest must entirely avoid.

Numbers 19:14 defines general corpse impurity that the high priest must avoid — it's the legal basis for the prohibition.

Deuteronomy 33:9 describes Levi's loyalty that put God above family — echoing the high priest's requirement to avoid defilement even for parents.