The church features an open interior without columns. There is an extensive amount of woodwork in the interior, including the altars, pews, ceiling, wainscoting, and the gallery frontal. There are four sets of oak pews across the width of the church. The vaulted ceiling is supported by hammer beams. The reliefs below the old high altar depict the sacrifice of Able, Abraham and his son Isaac, and the priest Melchizedek. The three Old Testament images are found in the Roman Canon. The statues of St. Peter and St. Paul were added later. Gold reliquaries that contain relics of various saints are in nooks on either side of the reredos. The shrine of the Blessed Virgin Mary on the left side of the church contains statues of St. Benedict on the left and St. Thomas Aquinas on the right, that were added in 1902. At the base of the altar is a relief of the Dormition of the Virgin. The St. Joseph shrine contains statues of St. Ignatius of Loyola on the left and St. Anthony of Padua on the right that were also added in 1902. At the base of the altar is a relief of Joseph on his deathbed with Mary and Jesus at his side. Initially, the bishop's throne was placed in the archway on the left side of the sanctuary. The large stations of the cross are bas reliefs with wood frames that line the side walls of the church. They were installed in 1892.