1.   Anyone who challenges my authority will have to stand up to this divine power when I come to Corinth.

2.   Confrontationalists advocate challenging Roman authority, experimenting with new liturgical forms and creating smaller new communities to replace or supplement traditional parishes.

3.   He thus challenged authority simply by Declaring that he was al-haqq, truth incarnate.

4.   I have overstepped my boundaries, challenged his authority, sabotaged his mission.

5.   There were no fractious sects and gangsters to challenge his authority.

6.   A restrained virility that boded ill for anyone so incredibly foolish as to even think of challenging his authority.

7.   Unconsciously she tilted her chin defiantly as she gazed back at him, as though daring him to challenge her authority.

8.   Among the most provocative ways to challenge police authority, as Rodney King learned, is to engage officers in a car chase.

9.   And until this IBF trial, nobody has challenged their authority.