The phrase "doeth a job" is an archaic way of saying "does a job." The spelling of "doeth" is derived from Middle English, where the third person singular present tense of "do" was pronounced with a voiced "th" sound. In IPA phonetic transcription, "doeth" is transcribed as /ˈdʌɪəθ/ with the final "th" representing the voiced dental fricative, as in the word "them." While the spelling is still used in some translations of the Bible, it is not commonly used in modern English.