Muslims deny that God is triunity , yet in the Quran God is referred to with the plural pronoun" we". In Sura 2:23,106, Sura10: 94, and Sura 66:12 where it says that God and the Holy Spirt breathed into Mary. Also in the Quran it says that the Spirit appeared to Mary in the form of a man. Muslims can not explain the plurality of God and also his oneness. But Christian do throughout the Bible because God revealed himself that way.