The consecration was carried out by the bishop Bruno von Schauenburg, who also promoted the church to parish.

The first priest in the newly ordained church was Stephen, one of the prominent figures in the history of medieval Jihlava.

An important point in the history of the church was the year 1436, when the Mass was served to the occasion of the proclamation of the Compacts of Basel, during the presence of the Holy Roman Emperor Sigismund.

Jihlava was struck by another big fire in 1523, the Church of St. James the Great, including both towers, was heavily damaged too.

A general reconstruction of the church was made in a Purist spirit at the end of the 19th century, during which the roof got new covers.

The interior of the church is built as three-aisles, the main nave is followed by a chancel, which has a polygonal pentagonal closing.

The ribs are carved in a decorative shape, with slightly bevelled edges, and joined in the flat circular keystones at the apex of the vault.

Ribs in the chancel continue to the heads, which are closing simple or bundle round shafts.

The vault above the three aisles is supported by four massive polygonal pillars and ribs ends in pyramidal brackets on the walls.

The monument of the church is a 7.5m high painting of "Decapitation of St. James", which decorates the main altar.

The buttresses are made from larger blocks of the local stone, bricks are used in some newer parts of the building.

Only the highest floor of the tower and the Mother of Sorrows chapel are plastered at the current time.

The walls of the chapel and the aisles are decorated with tall, slender lancet arch windows, which are divided by vertical rods.

Windows are decorated with tracery, mostly filled with complicated curved shapes with a flame motive.

Few smaller portals are similarly conceived, preserved also in the northern and southern walls of the church.

The great bell was created in the fortification moat near the Virgin Gate on the day of St. Michael in 1563.

As soon as the bell, baptized by the name of James, was hung on the tower in 1563, Zuzana sat on a chair between the temple doors and let it ring.