Jamb Statues of Chartres Cathedral

what are jamb statues?
Jamb statues are figures carved on the jambs of a doorway or window. These statues are often human figures- either religious figures or secular or ecclesiastical leaders. Jambs are usually a part of a portal, accompanied by lintel and trumeau.
The Chartres group was originally located in the south bay of the west façade of Chartres Cathedral, in what is known as the Royal Portal. 
Though the sculptural program of Chartres was executed by various masters, this particular group displays evidence of the influence by the Head Master of the cathedral. Conceived and created during the mid-twelfth century, the Chartres group performed a significant function both as a religious narrative and as an architectural component.
The jamb statues represent unknown figures, perhaps prophets, from the Old Testament. They stand with solemn dignity, arms and legs rigidly frozen into place, gazing into the distance.

they also tilt their heads towards the door and bow a little as if they are welcoming the person who is entering the church as well as if they are entering with the person.

What i like?
Jamb statues were a very interesting element of  churches and cathedrals especially since they are mostly in the facades and portals, seemingly welcoming the person whose entering the building.