Natural baldness seems to have been uncommon, since it exposed people to public derision. ( Leviticus 13:29 ; 2 Kings 2:23 ; Isaiah 3:24 ; 15:2 ; Jeremiah 47:5 ; Ezekiel 7:18 ) Artificial baldness marked the conclusion of a Nazarites vow, ( Numbers 6:9 ; Acts 18:18 ) and was a sign of mourning.