Since it was the Holy Spirit who impregnated Mary, this man has committed the unpardonable sin, when he accuses God of being a 'sexual predator'.
28 Verily I say unto you, All sins shall be forgiven unto the sons of men, and blasphemies wherewith soever they shall blaspheme: 29 But he that shall blaspheme against the Holy Ghost hath never forgiveness, but is in danger of eternal damnation: 30 Because they said, He hath an unclean spirit. (Mark 3:28-30)
He's done. The Lake of Fire shall be his eternal abode.
blasphemy is a matter of ascribing works of God to works of the Devil, or Demons- blapshemy is the final rejection of the call of the Holy spirit to salvation