See Du Cange, who produces this as an instance, "Quod Ministellorum munus interdum praestabant milites probatissimi.
Munus ornare verbis=--To enhance the value of a present by words.
In these words, as is shown by those that follow, the munus hominum is exactly what it is in the Aeneid, duty to Man and the State, and as it is laid down for man by God, it is also duty to Him.
In the Dream of Scipio we read that "piis omnibus retinendus est animus in custodia corporis: nec iniussu eius a quo ille est vobis datus, ex hominum vita migrandum est, ne munushumanum adsignatum a deo defugisse videamini.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "munus" in a variety of sentences. We hope that you will now be able to make sentences using this word.