He studied in Paris, where he earned his master's degree in both Roman and Canon Law.
In 1525, Rev has been appointed Bishop of Oslo with the support of Archbishop Olav Engelbrektsson and King Frederick I of Denmark.
He remained lojal to Frederick until his death in 1533, and after that he supported the late kings Protestant son, Prince Christian.
[5] In August 1536 after the Count's Feud in Denmark and during Archbishop Olav Engelbrektsson rebellion in Norway, Rev, along with the other Roman Catholic bishops of Denmark and Norway, was declared deposed by now King Christian III.
Rev renounced In November 1537, his episcopal dignity in a letter to the King and promised his continued loyalty and allegiance.