Bible Verses About Aaron: Forbidden to mourn the death of his sons, Nadab and Abihu

And Moses said to Aaron, and to Eleazar and Ithamar, his sons: Uncover not your heads, and rend not your garments, lest perhaps you die, and indignation come upon all the congregation. Let your brethren, and all the house of Israel, bewail the burning which the Lord has kindled.

Aaron answered: This day hath been offered the victim for sin, and the holocaust before the Lord: and to me what thou seest has happened. How could I eat it, or please the Lord in the ceremonies, having a sorrowful heart?