He wolde suffre for a quart of wyn
A good felawe to have his concubyn
A twelf month, and excuse hym atte fulle.

– Geoffrey Chaucer

The Canterbury Tales, General Prologue. The Summoner, who acts on behalf of the judicial committee of the Church, is known to loan his girlfriend to "a good felawe" for a year in exchange for a quart of wine. Was pimping and living off immoral earnings not a sin in those days?