Prepositions show the relationship between a noun or pronoun and another word in the sentence. They typically indicate location, time, direction, or manner. Examples of prepositions include: on, in, at, to, from, by, with, for, etc.
Exhort means to strongly encourage or urge someone to do something.
Here's an example:
* The coach exhorted his team to play harder. (Exhort is the verb, and it's the action the coach is taking.)