Final answer:
The inner narthex refers to the portico or vestibule at the entrance of a church. When two inner narthexes are present, it means there are two separate porticoes or vestibules at the entrance of the church. The inner narthex was often adorned with mosaics and frescoes depicting scenes from the lives of Christ, the Mary, and other saints.
Step-by-step explanation:
The inner narthex refers to the portico or vestibule at the entrance of a church. When two inner narthexes are present, it means there are two separate porticoes or vestibules at the entrance of the church.
The inner narthex was often adorned with mosaics and frescoes depicting scenes from the lives of Christ, the Mary, and other saints. These images were meant to connect past events from sacred history with the celebration of the Eucharist in the present.
In some churches, the inner narthexes were also used for rituals such as foot washing on Holy Thursday.