The correct spelling of the phrase "hast coming" is actually "hast cometh". The word "hast" is an archaic second person singular present indicative form of "have", and "cometh" is an archaic third person singular present indicative form of "come". The correct spelling of "cometh" is pronounced as /kʌm/?θ/ using IPA phonetic transcription. This spelling variant was commonly used during the Middle English period, but it is now considered outdated and rarely used in modern English.