On October 3, the Most Rev. Erik Varden, OCSO, (46) formerly the Abbot of the Cistercian Abbey of Mt. St. Bernard in the UK and a convert to Catholicism was ordained a bishop in the Church and also installed as the 6th Territorial Prelate of the Prelature of Trondheim, Norway, his native country. It is interesting to note that his episcopal ordination took place in the Lutheran Nidaros cathedral, the traditional site of the consecration of the Kings of Norway which was built in the 12th Century and was originally a Catholic Cathedral.
A helpful reader directed me to the following information: The lions are taken from the arms of Mt. St. Bernard Abbey, Bishop Erik’s monastery. The pillar comes from the motto that he had used as abbot (“Columna in templo Dei”) – “A pillar in the temple of God”, a quote from the Book of Revelation. The rose symbolizes the flower that sprang from Root of Jesse, a reference to the mystery of the incarnation. The coat of arms was designed by Archbishop Charles Scicluna.
They are clear, simple and nicely designed. The artwork is also rather nice too.
EXARANDORUM 
The three golden lions on blue on the sinister half are the chief in the coa of the Abbey Mt. Saint-Bernard. It is possible that the column and the rose are mgr. Vardens personal symbols. The axe is the coa of the prelature TRONDHEIM. Perhaps we see here marshalling from the coa as an abbot with the prelature coa. My only doubt is in the color of the column: blue celeste is in English heraldry more common than in other countries. What could be the meaning?