Leviticus 13:45 commands lepers to tear clothes and uncover head as impurity signs — precisely the actions priests are forbidden here.

Leviticus 21:1-15 reinforces the same prohibition for priests: no mourning rituals like tearing clothes or uncovering head.

Leviticus 21:5 prohibits priests from making bald patches or cuts—directly parallel to the mourning restrictions commanded here.

Leviticus 21:10 specifically forbids the high priest from loosening his hair or tearing his clothes—identical to the command here for Aaron's sons.

Numbers 6:7 prohibits Nazirites from mourning even for close relatives — directly paralleling the priest's prohibition for his brothers.

Deuteronomy 33:9 praises Levites for disregarding family ties to keep God's covenant — the same principle behind the priest's refusal to mourn.

Ezekiel 24:16 tells Ezekiel not to mourn for his wife as a prophetic sign — directly parallel to the priest's prohibition from mourning for his brothers.

In Ezekiel 24:17, God similarly prohibits Ezekiel from mourning his wife's death as a sign, echoing the restraint commanded here.

In Exodus 33:4, the people mourn in response to divine judgment, contrasting with the priestly prohibition from mourning here.

Numbers 6:6 commands Nazirites not to approach a dead person — a similar separation from death for holiness, though here priests are only forbidden to mourn.

Jeremiah 7:29 commands people to cut off their hair as a lament — contrasting with the priest's prohibition from uncovering his head in mourning.

Micah 1:16 commands shaving heads in mourning — directly opposite to the prohibition on loosening hair here, but both use hair as a mourning symbol.