1583 he was consecrated as bishop together with Petrus Benedicti of Linköping, Nicolaus Stephani of Växjö, and Christian Agricola of Tallinn with catholic ceremonies of the liturgy of John III.

King John even planned sending Sorolainen to Constantinople for ecumenical dialogue with Eastern Orthodox Church.

Later in Synod of Uppsala (1593), bishop Sorolainen together with Bishop Olaus Stephani Bellinus made secretly Calvinist Duke Charles his enemy by initiative of banning Calvinism in Sweden, which was decided by the synod.

When Duke Charles became Regent, after his War against Sigismund, son of his brother John III, he used his opportunity to revenge to Bishop Sorolainen by imprisoning him for alleged "popery", which was although annulled by Diet of Lingköping.

You can help Wikipedia by expanding it.This biographical article about a Finnish religious figure is a stub.