Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The church in a dream indicates a house of knowledge for scholars, or a house of worry and grief for the ignorant. It may also indicate a grave, a prison, or a house of heresy.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The church indicates a lying woman or a heretical man. Entering it indicates marriage for the unmarried, a child for the pregnant, or falling into worry.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The church is interpreted as the king's house or a man of position. Whoever sees himself praying in it is drawing close to the ruler.