Here's a short story:

A pastor is usually an ordained leader of a Christian congregation. When used as an ecclesiastical styling or title, the term may be abbreviated to "Pr" or "Ptr" (singular) or "Ps" (plural). A pastor also gives advice and counsel to people from the community or congregation. It is derrived from the Latin word, "pascere", meaning fed or grazed. 

The word "pastor" derives from the Latin noun which means "shepherd" and relates to the Latin verb - "to lead to pasture, set to grazing, cause to eat". The term "pastor" also relates to the role of elder within the New Testament, but is not synonymous with the biblical understanding of minister. Many Protestant churches call their ministers "pastors". 

Present-day usage of the word is rooted in the Biblical image of shepherding. The Hebrew Bible (or Old Testament) uses the Hebrew word ("raʿah") which means shepherd. It occurs 173 times and relates to the feeding of sheep, as in Genesis 29:7, or to the spiritual feeding of human beings, as in Jeremiah 3:15, "Then I will give you shepherds after My own heart, who will feed you on knowledge and understanding" (NASB). English-language translations of the New Testament usually render the Greek noun ("poimēn") as "shepherd" and the Greek verb ("poimaino") as "to shepherd". The two words occur a total of 29 times in the New Testament, most frequently referring to Jesus. For example, Jesus called himself the "Good Shepherd" in John 10:11. The same words in the familiar Christmas story (Luke 2) refer to literal shepherds. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: What is a pastor?
Guess: an ordained leader

Question: Of what?
Guess: a Christian congregation

Question: Would would you abbreviate it?
Guess: Pr

Question: What about a plural abbreviation?
Guess: Ps

Now answer the following question in the same format.

Question: What does a pastor usually do?

gives advice