More things are conceived by the Holy Spirit than one might guess. Not every imagination, new thought, dream, or insight is inspired by the 3rd member of the Trinity, but many are. Immaculate conceptions are commonplace with an uncommonly intimate deity like the Most High God.
“But after he had considered this, an angel of the Lord appeared to him in a dream and said, ‘Joseph son of David, do not be afraid to take Mary home as your wife, because what is conceived in her is from the Holy Spirit,’” (Matthew 1.20 NIV).
Conception happens when two (or more) parties come together to form something new. Together, Paul McCartney and John Lennon conceived of some of the greatest new music of the past century. My wife and I came together and conceived some of the greatest new kids on planet earth.
Conceptions like these may be miraculous, but not necessarily immaculate. Conception happens when two or more parties come together to form something new. Immaculate conception occurs when God is one of those parties.