doubting Thomas
noun /ˌdaʊtɪŋ ˈtɒməs/
/ˌdaʊtɪŋ ˈtɑːməs/
[usually singular]- a person who is unlikely to believe something until they see proof of itWord OriginFrom St Thomas in the Bible, who did not believe that Jesus Christ had risen from the dead until he saw and touched his wounds.