When people depend upon you and your job, you cannot always stop even when something horrible has happened in your family.
That happened to Aaron and two of his sons, when two other sons of Aaron died for their sin before the Lord, and Moses said to the survivors,
“And Moses said to Aaron, and to Eleazar and Ithamar, his sons, ‘Do not uncover your heads nor tear your clothes, lest you die, and wrath come upon all the people. But let your brethren, the whole house of Israel, bewail the burning which the LORD has kindled. You shall not go out from the door of the tabernacle of meeting, lest you die, for the anointing oil of the LORD is upon you.’ And they did according to the word of Moses” (Leviticus 10:6-7).
As hard as that must have been to continue to work just after witnessing the deaths of Nadab and Abihu, yet, Aaron and his two other sons had to continue, because the sanctification of Israel depended upon their work.
A police officer or soldier cannot stop working for the day because he just saw his best friend killed next to him.