'Dishevel' in the Bible

Then Moses said to Aaron and to Eleazar and Ithamar his other two sons, "Do not dishevel the hair of your heads and do not tear your garments, so that you do not die and so that wrath does not come on the whole congregation. Your brothers, all the house of Israel, are to mourn the burning which the Lord has caused,

“The priest who is highest among his brothers, who has had the anointing oil poured on his head and has been ordained to wear the garments, must not dishevel his hair or tear his garments.