The spelling of the name "Joseph Ben Matthias" follows standard English phonetics. "Joseph" is pronounced as /ˈdʒoʊsəf/ with the stress on the first syllable. "Ben" is pronounced as /bɛn/, and "Matthias" is pronounced as /məˈθaɪəs/ with the stress on the second syllable. Overall, the spelling accurately reflects the pronunciation of the name, making it easy for English speakers to read and say correctly.