He was the father of doctor Eberhard Zacharias Munck af Rosenschöld and singer Brita Catharina Lidbeck.

He then stayed in Uppsala until 1756, where he made a name for himself with his treatise De jure devolutionis (1755), in which he argued that a ruler should settle theological disputes and – without violating freedom of conscience – determine the prevailing religion.

Munck was offered a docentship in politics by Johan Ihre, but preferred to return to Lund, where he was ordained and became an adjunct professor of theology in 1757.

The dissertation, entitled De synergismo recentiori (1769), was a dispute and response to the later dean of Skara, Andreas Knös [sv], who had attacked Munck because of his notes on conversion that he had added to Danish theologian Marcus Wøldike's [da] Compendium theologiæ, published by him in 1760, a work that long remained the accepted textbook in theology throughout Scandinavia and was published in four large editions.

[1] He had eleven children, including singer Brita Catharina Lidbeck and doctor Eberhard Zacharias Munck af Rosenschöld.